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John W. Mauchly papers

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Held at: University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts [Contact Us]3420 Walnut Street, Philadelphia, PA 19104-6206

This is a finding aid. It is a description of archival material held at the University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts. Unless otherwise noted, the materials described below are physically available in their reading room, and not digitally available through the web.

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John W. Mauchly was born on August 30, 1907, to Sebastian and Rachel (Scheidermantel) Mauchly in Cincinnati, Ohio. He moved with his parents and sister, Helen Elizabeth (Betty), at an early age to Chevy Chase, Maryland, when Sebastian Mauchly obtained a position at the Carnegie Institute of Washington as head of its Section of Terrestrial Electricity. As a youth, Mauchly was interested in science, and in particular with electricity, and was known to fix neighbors' electric systems at the age of 13 or 14. Mauchly attended E.V. Brown Elementary School in Chevy Chase and McKinley Technical High School in Washington, DC. At McKinley, Mauchly was extremely active in the debate team, was a member of the national honor society, and became editor-in-chief of the school's newspaper, Tech Life. After graduating from high school in 1925, he earned a scholarship to study engineering at Johns Hopkins University. He subsequently transferred to the Physics Department, and without completing his undergraduate degree, instead earned a Ph.D. in physics in 1932.

From 1932 to 1933, Mauchly served as a research assistant at Johns Hopkins University where he concentrated on calculating energy levels of the formaldehyde spectrum. Mauchly's teaching career truly began in 1933 at Ursinus College where he was appointed head of the physics department, where he was, in fact, the only staff member. According to John Costello, Mauchly "became a campus celebrity--if not a faculty favorite--for the irreverent Professor Ho-Hum lectures he used to deliver on the last day of class before Christmas," (Costello, page 50). In addition to his teaching duties, Mauchly sought automated ways to manipulate weather data. After some experimentation on his own, he visited John V. Atanasoff, an Iowa State University professor and inventor of the Atanasoff-Berry Computer (ABC) which used vacuum tubes. Because the ABC machine was not fully electronic, Mauchly decided to continue his own research and experimentation.

In the summer of 1941, Mauchly took a Defense Training Course for Electronics at the University of Pennsylvania Moore School of Electrical Engineering. There he met the lab instructor, J. Presper Eckert (1919-1995), with whom he would form a long-standing working partnership. Following the course, Mauchly was hired as an instructor of electrical engineering and in 1943, he was promoted to assistant professor of electrical engineering. Following the outbreak of World War II, the United States Army Ordnance Department contracted the Moore School to build an electronic computer which, as proposed by Mauchly and Eckert, would accelerate the recomputation of artillery firing tables. In 1943, Mauchly and Eckert began building the ENIAC, Electronic Numerical Integrator and Computer, "an electronic machine to replace mechanical devices" (Costello, page 45). Mauchly has been described as the visionary and Eckert the engineering mastermind of Project PX, the name of the ENIAC during development. ENIAC was not completed until 1946, one year after the end of the war, and was first used by the U.S. Army at Aberdeen Proving Grounds in Maryland for ballistics testing in 1947.

While still at Penn's Moore School, and even during the construction of ENIAC, Eckert and Mauchly were also working on the "next computer," the Electronic Discrete Variable Automatic Computer (EDVAC), which Mauchly describes as "the outcome of lengthy planning in which Eckert and [he] deliberately tried to overcome many problems of storage and control which were evident in the hasty 'state-of-the-art' ENIAC System," (Mauchly, Datamation). However, in 1946, Eckert and Mauchly resigned from Penn as a result of a patent dispute over "changes in the way in which ... contracts were administered at the University and changes which the University wished to make in the terms of [their] employment" (Mauchly, Resume). Together, they immediately formed the Electronic Control Company (ECC) which was later renamed the Eckert-Mauchly Computer Corporation (EMCC) when it was incorporated on December 22, 1947. During this period of Mauchly's career, he was denied security clearance which made his work difficult and resulted in his frequently working from home. Although the reasons for Mauchly's security clearance problems were never disclosed, Kay Mauchly suspected, based upon Mauchly's FBI file that it was because he subscribed to Consumer Reports which was declared communist-oriented, or because some members of his staff were considered security risks. Despite this challenge, Eckert and Mauchly introduced, in 1949, the Binary Automatic Computer (BINAC), which used magnetic tape rather than punched cards and stored computer programs internally. By 1950, the Universal Automatic Computer (UNIVAC) had been developed.

In February 1950, EMCC was purchased by Remington Rand, and EMCC became a division of Rand. The UNIVAC went on the market in 1951 and is considered the first widely used commercial computer able to handle both numerical and alphabetical data. The first order for a UNIVAC came from the United States Bureau of the Census. In 1955, Remington Rand merged with Sperry Corporation and Mauchly became the head of the UNIVAC Applications Research Center (UARC), the UNIVAC division of the Sperry Rand Corporation. Applications research was a field for which Mauchly had long campaigned, and while heading UARC, Mauchly, along with his colleagues, developed C-10 programming code as well as many other "component parts for a commercially useful data processing device of high speed and general scope," (Mauchly, Resume). UNIVAC II was introduced in 1957. Documents within the John W. Mauchly papers indicate that Mauchly and Remington Rand/Sperry Rand did not always agree on the direction in which the company was headed, although productive work appears to have been achieved.

In 1959, Mauchly left Sperry Rand and started Mauchly Associates, Inc. One of Mauchly Associates' notable achievements was the development of the Critical Path Method (CPM) which provided for automated construction scheduling. Mauchly also set up a consulting organization, Dynatrend, in 1967 and worked as a consultant to Sperry UNIVAC from 1973 until his death in 1980.

During the early 1970s, Sperry Rand and Honeywell underwent litigation regarding the invention of the electronic computer. According to Kay Mauchly, "Sperry was suing to collect royalties, charging infringement of the ENIAC patent [and] Honeywell wished to avoid paying royalties by claiming that the ENIAC patent was invalid because of prior art (among other things) and charging Sperry with restraint of trade," (Mauchly, Kathleen R., page 117). The court eventually ruled that Mauchly and Eckert had not invented the electronic digital computer, but that instead, John V. Atanasoff was the inventor. Many critics of this ruling say that there are very few similarities between Atanasoff's ABC and the ENIAC; and Kay Mauchly states that papers and "physical components of the electronic computer that Mauchly was building during the time he was teaching at Ursinus College ... alone are evidence that Mauchly's concept of an electronic 'computer-calculator' predated any association with John V. Atanasoff and led directly to the design of the ENIAC," (Mauchly, Kathleen R., page 117).

John Mauchly died on January 8, 1980, in Abington, Pennsylvania, during heart surgery and following a long illness. His first wife, Mary Augusta Walzl, a mathematician, whom he married on December 30, 1930, drowned in 1946. John and Mary Mauchly had two children, James (Jimmy) and Sidney. In 1948, Mauchly married Kathleen Kay McNulty (1921-2006), one of the six original ENIAC programmers; they had five children Sara (Sallie), Kathleen (Kathy), John, Virginia (Gini), and Eva.

Works cited:

Costello, John. "As the Twig is Bent: The Early Life of John Mauchly," IEEE Annals of the History of Computing, Volume 18, No. 1, 1996, pages 45-50.

Mauchly, John W. "Amending the ENIAC Story," Datamation, Volume 25, No. 11, 1970

Mauchly, John W. "Resume: Education and Experience of John W. Mauchly," (unpublished).

Mauchly, Kathleen R. "John Mauchly's Early Years," Annals of the History of Computing, Volume 6, Number 2, April 1984, pages 116-138.

John W. Mauchly (1907-1980) was a physicist, teacher, and a leader in the development of computers. With J. Presper Eckert, he invented the Electronic Numerical Integrator and Computer (ENIAC), the Electronic Discrete Variable Automatic Computer (EDVAC), the Binary Automatic Computer (BINAC), and the Universal Automatic Computer (UNIVAC). This first installment of Mauchly's papers documents Mauchly's youth, education, early career at Ursinus College, his work at the University of Pennsylvania Moore School of Electrical Engineering, his partnership with J. Presper Eckert, with whom he formed two companies, the Electronic Control Company (ECC) and the Eckert-Mauchly Computer Corporation (EMCC), and his work through 1959 with Remington Rand/Sperry Rand after its purchase of EMCC in 1950. Processing of the remainder of the collection is ongoing and this finding aid will be updated as additional material becomes available.

This portion of the collection is divided into three series: I. Youth, education, and early career; II. Moore School of Engineering, University of Pennsylvania; and III. Eckert-Mauchly partnership. For detailed information on each series, please see the finding aid. Researchers should be aware that there is limited material on the development of the ENIAC which was a classified War Department project.

Whenever possible, John Mauchly's original order has been maintained. As a result, researchers may find articles, writings, and other material in multiple folders within the collection. Arrangement of correspondence has been maintained as it was organized either by Mauchly in his early years or by his secretaries during the Eckert-Mauchly partnership period. When acronyms or abbreviations have not been fully described, it is because the full name is not known.

This collection will be of value to scholars studying the development of computers, in particular the Electronic Numerical Integrator and Computer (ENIAC), the Electronic Discrete Variable Automatic Computer (EDVAC), the Binary Automatic Computer (BINAC), and the Universal Automatic Computer (UNIVAC). Early work in programming, coding, compilers, routines and subroutines, and most importantly, the application of electronic computers in government, business, and industry, as well as the history of the computer, is well documented. Moreover, this collection provides a glimpse into the personal life of the remarkable man behind this work through his interactions with family, friends, and colleagues.

Gifts of John W. and Kay Mauchly, 1981 and Kay Mauchly, 1986.

Publisher
University of Pennsylvania: Kislak Center for Special Collections, Rare Books and Manuscripts
Finding Aid Author
Holly Mengel
Finding Aid Date
2015 September 9
Access Restrictions

The bulk of this collection is open for research use. However, a few files containing personally identifiable information and student records are restricted from access. These files, housed in box 9, folders 13-16, 19, and 20-24; box 15, folders 1 and 34, and box 34, folder 50, are clearly marked in the finding aid. For information about gaining access to portions of restricted items, researchers should email rbml@pobox.upenn.edu.

Use Restrictions

Copyright restrictions may exist. For most library holdings, the Trustees of the University of Pennsylvania do not hold copyright. It is the responsibility of the requester to seek permission from the holder of the copyright to reproduce material from the Kislak Center for Special Collections, Rare Books and Manuscripts.

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Scope and Contents

This series documents John W. Mauchly's life from 1908 to 1941 when he began working at the University of Pennsylvania Moore School of Electrical Engineering. The series is divided into four subseries: A. Life and education in Chevy Chase, Maryland, B. Life and education at Johns Hopkins University, C. Teaching career at Johns Hopkins University, and D. Head of Department of Physics, Ursinus College.

Subseries A. Life and education in Chevy Case, Maryland, includes material from Mauchly's very early childhood through his high school years. The earliest materials in the subseries consist of letters from family members and reveal a close-knit family. Included is a remarkable notebook of codes and ciphers dated 1918. The notebook also contains examples of Mauchly's early methodology for creating standardized data in the Girls' and Boys' "Quiz Book" in which his friends' likes and dislikes are recorded. The bulk of the material in this subseries, however, dates from 1920 to 1925. Documents include his financial accounts; correspondence, mainly with a sizable group of friends; his diaries; his school coursework, grades, and activities; and other memorabilia. Of note are Mauchly's diaries in which he records minute details about his daily life, including his sleep patterns, daily activities, and lists of friends, correspondents and people with whom he spent time. These diaries, along with his notebook, reveal his early interest in data of all types and document his methodology for collecting and organizing information; they provide a fascinating glimpse into his early life. One particular highlight is his record of the "Somerset Affair," compiled after his mother suggested that he spent too much time away from home. Using data he collected about his times of arrival and departure, he successfully defended himself against her accusations. Mauchly's personality, popularity, and sense of humor are apparent in this portion of the collection.

Subseries B. Life and education at Johns Hopkins University, documents Mauchly's undergraduate and doctoral work in the Baltimore, Maryland institution from 1925 to 1932. Because Mauchly saved so much of his own material, the subseries provides a clear picture of his life as a student. Researchers will find evidence of his hobbies, friendships, research, schoolwork, and writing. A large portion of this subseries consists of correspondence which, as in the first subseries, indicates a strong network of family and friends. Many of the same correspondents from his high school years appear in this group of materials. In 1930, Mauchly married Mary Walzl (died 1946), and this subseries includes materials relating to both John and Mary Mauchly. Materials that relate only to Mary are housed in a separate series (not yet available). In addition to Mauchly's schoolwork at Johns Hopkins (which is documented with class notes, lab records, official notices, and transcripts), Mauchly also taught a Physics I class and worked as a tutor. Researchers unfamiliar with Mauchly may be interested in his poetry, submissions to Black and Blue Jay, and "Ye Knews-Letter" which indicate a strong interest in the humanities and show his sense of humor and personality. Of particular interest is the document entitled "Girls to Whom I Have Given Special Attention," which includes a list of women, the reason he gave each one special attentions, and, presumably, the number of times the special attentions were bestowed.

Subseries C. Teaching career at Johns Hopkins University consists of only a small amount of material, dating from 1932 to 1933, the year after earning his Ph.D. at Johns Hopkins and before starting his career as a professor at Ursinus College. Oddly, there are no records of his actual teaching, but instead this group of materials contains his typical correspondence from family and friends; financial records; and letters from Mauchly to numerous institutions and individuals seeking permanent employment, which, as a result of the Depression, was difficult to obtain.

Subseries D. Head of Department of Physics, Ursinus College dates from 1933 to 1941 and documents Mauchly's career as a professor at Ursinus as well as his entrance, more largely, into the community of physicists and mathematicians. The material is further organized into Correspondence; Clippings; Notes and datasheets; Organizations, memberships, and conferences; Personal and family documents; Teaching; Writings by Mauchly; and Writings by others. The correspondence in this group of materials is largely professional and there is rarely a large group of letters to or from any one person, with the exception of correspondence with John DeWire, H. Helm Clayton, Dr. Irving, and S.S Wilks, to name the most prominent. Researchers will find Mauchly's correspondence with John V. Atanasoff in box 3, folders 28 and 32. As is documented in other subseries, his network of family and friends was extensive. The Notes and datasheets grouping shows many of Mauchly's interests and includes his notes, formulas, math problems, as well as data gathered from other sources. Many of these interests were life-long, in particular Mauchly's interest in weather and forecasting; therefore, researchers should consult the Notes and datasheets groupings in other series for later research on the same topics. As Mauchly became more involved in his profession, both as teacher and scientist, he increasingly joined societies and attended conferences for his continuing education, which in this subseries are arranged alphabetically by organization name. There are fewer personal and family documents in this subseries, but his correspondence with his mother, sister, wife and friends still provides substantial information about his personal life. Mauchly's teaching career, which according to documentaries and published articles, was exciting, fun, and innovative, is documented through course material, petitions by students for Mauchly's pre-Christmas lecture, and trips for physics classes. Finally, this subseries contains writings by Mauchly and others.

This first series provides an excellent foundation for research for those interested in who Mauchly was and how he thought, learned, educated, and problem-solved.

Accounts, 1923-1925.
Box 1 Folder 1
Correspondence: copies of letters from Mauchly to Eleanor Allen, the editor-in-chief of "Daily Stuff," Dorothy Clark, Molly Greely, Pauline Sickler, and Elinor Strom, 1922-1924.
Box 1 Folder 2
Correspondence: letters from Mauchly to Eleanor Allen; Sarah, Polly, and Evelyn Baylis; Ring Lardner; Martha Louise Roberts; George Stone; Wells & Richardson Co.; and Augustine Winnemore, 1919-1925.
Box 1 Folder 3
Correspondence: letters to Mauchly from Eleanor Allen, Evelyn Baylis, Dorothy Clark, and Cynthia Crocker, 1923-1925.
Box 1 Folder 4
Correspondence: letters to Mauchly from R.N. Dempster (Johns Hopkins University), [Darmis and Ford], Eda B. Frost, Malcom B. Gerry, Molly Greely, Connie Hay, Mrs. Hutchins, and Dorothy and Hubert Johnson, 1908-1925.
Box 1 Folder 5
Correspondence: letters to Mauchly from John W. Knowlton, Ruth Laudick, Lillian McColm, Betty Mauchly (his sister), and Etta C. Mauchly, 1923-1925.
Box 1 Folder 6
Correspondence: letters to Mauchly from Lydia Mauchly, Rachel Mauchly (his mother), Rachel Mauchly (his aunt), and Sebastian Mauchly (his father), 1915-1925.
Box 1 Folder 7
Correspondence: letters to Mauchly from Ruth Miller, Edythe Mitchell, Peggy Mitchell, C.W. Park, Martha Roberts, and Mary, Emma, and Naomi Scheidermantel, 1921-1925.
Box 1 Folder 8
Correspondence: letters to Mauchly from Pauline Sickler, Fay Smead, Gerard Snell, G.F. Snyder, Claire Stone, George W. Stone, Philip J. Stone, Elinor Storm, Laurance Stuntz, Raymond Walters, Keech Wilson, Frank Winant, and Augustine Winnemore, 1919-1925.
Box 1 Folder 9
Correspondence: letters neither to nor from Mauchly; to and from friends including Mrs. Blum, Molly Greely, Martha Roberts, George W. Stone, Elinor Strom, and Jane H. Wylie, 1924-1925.
Box 1 Folder 10
Diary, 1923 August-1925 February.
Box 1 Folder 11
Diary, 1925 April-July.
Box 1 Folder 12
McKinley Technical High School, commencement invitation and program, 1925 June 16.
Box 1 Folder 13
McKinley Technical High School, coursework, 1920-1925.
Box 1 Folder 14
McKinley Technical High School, mechanical drawings, 1921-1923.
Box 1 Folder 15
McKinley Technical High School, report cards, circa 1917-1924.
Box 1 Folder 16
McKinley Technical High School, "Tech Life," notes, and business cards, 1923-1924.
Box 1 Folder 17
Notebook of codes and ciphers and Girls and Boys' "Quiz Books", 1918.
Box 1 Folder 18
Physics Club Program, lectures 1-14, 1924 October-November.
Box 1 Folder 19
Physics Club Program, lectures 15-24, 1924 November-December.
Box 1 Folder 20
Research on radio and radio telegraphy, 1923-1924.
Box 1 Folder 21
Theater programs, 1922-1923.
Box 1 Folder 22
Miscellaneous notes and memorabilia, circa 1923-1925.
Box 1 Folder 23
Artwork and poetry, circa 1925-1932.
Box 1 Folder 24
Bach Club, 1930-1932.
Box 1 Folder 25
Christmas and Valentine's Day cards, unsent, circa 1925-1932.
Box 1 Folder 26
Conference publications: American Geophysical Union, Minutes of the General Assembly of the Union and of its Sections, 1927 April 28-29.
Box 1 Folder 27
Conference publications: International Union of Geodesy and Geophysics, meeting, Prague, 1927 September.
Box 1 Folder 28
Financial records including accounts, bills, fines, insurance, and receipts, 1926-1932.
Box 2 Folder 5
Johns Hopkins University: Coursework including Anatomy, Combining practice and theory in the Engineering College, Descriptive Geometry, and Electrical engineering, 1925-1928.
Box 1 Folder 30
Johns Hopkins University: Coursework including Electricity and magnetism, English composition, and German, 1925-1929.
Box 1 Folder 31
Johns Hopkins University: Coursework including Mathematics and mechanics, Theoretical chemistry, and "random lecture notes", 1927-1931.
Box 2 Folder 1
Johns Hopkins University: Coursework, math notes, 1928-1929.
Box 2 Folder 2
Johns Hopkins University: Coursework, thermodynamics notes, 1928-1929.
Box 2 Folder 3
Johns Hopkins University: Coursework, lab record notebook, 1930 December-1932 May.
Box 2 Folder 4
Johns Hopkins University: Official notices, matriculations, schedules, and grades, 1925-1932.
Box 1 Folder 29
Johns Hopkins University: Transcripts, 1932.
Box 3 Folder 18
Letters from Mauchly to Herbert W. Alrich (Johns Hopkins University), J.S. Ames (Johns Hopkins University), Hewlett B. Cox, Frank J. Goodnow, G.H. Hoddinatt, Senator Jones, Martha Roberts, Charles G. Ritter, Lee Rittenhouse, Charlotte Wheeler, R.F. Wood, and Jane Wylie, 1926-1929.
Box 2 Folder 6
Letters from Mauchly to his parents and sister (Sebastian J., Rachel, and Betty Mauchly), 1926-1927.
Box 2 Folder 7
Letters from Mauchly to his parents and sister (Sebastian J., Rachel, and Betty Mauchly), 1928-1930.
Box 2 Folder 8
Letters from Mauchly requesting employment, 1932 March-May.
Box 2 Folder 9
Letters neither to nor from Mauchly, friends, including Charles Ritter, Martha Roberts, and Charlotte Wheeler, 1925-1929.
Box 2 Folder 10
Letters, A-B, to Mauchly (from Eleanor Allen, D. Clinton Alrich, Herbert W. Alrich, Joseph S. Ames (Johns Hopkins University), Harden Anderson, Anna Baker, W Blum, H. Lee Bown, H.A. Brooks, Harriet S. Browne, and Jane Randolph Butler), 1925-1932.
Box 2 Folder 11
Letters, C-E, to Mauchly (from G.H. Cartlidge, Dorothy Clarke, Tulio Cordero, Cynthia Crocker, J.G. Daneker, George H. Davis, R.N. Dempster (Johns Hopkins University), G.H. Dicke, Edwin Dutton, Grace Dutton, and S. Ellender), 1925-1932.
Box 2 Folder 12
Letters, F-G, to Mauchly (from Scott E. Forbush, Francis Fort, John C. French, Eda B. Frost, Janet Frost, L. Gerry, Frank J. Goodman (Johns Hopkins University), and Molly Greely), 1925-1932.
Box 2 Folder 13
Letters, G-I, to Mauchly (from Ruth Griggs, Isobel Hancock, Reno S. Harp, Becky Hathaway, Connie Hay, H. Hayman, C. Hite, Hillman Hollister, Evelyn Hoyt, Charles W. Hyde, and Anna H. Isanogle), 1925-1928.
Box 2 Folder 14
Letters, J-K, to Mauchly (from D. Johnson, Mrs. F.A. Johnson, Herbert Rex Johnson, Louise Johnson, Richard Johnson, William Johnson, Margaret Karr, and Lillian Kirsch), 1925-1930.
Box 2 Folder 15
Letters, K-M, to Mauchly (from John Knowlton, J.C. Koons, Louise Laudick, Ruth Laudick, Emma Lehman, Reed Lewis, and John McRae), 1925-1928.
Box 2 Folder 16
Letters, M, to Mauchly (from Betty Mauchly, E. Clarke Mauchly, Etta Mauchly, and Mary Mauchly), 1925-1931.
Box 2 Folder 17
Letters, M, to Mauchly (from his mother Rachel S. Mauchly), 1925-1932.
Box 2 Folder 18-20
Letters, M, to Mauchly (from his aunt Rachel Mauchly, his father Sebastian Jacob Mauchly, Ruth Miller, and Margaret Phelps Mitchell), 1925-1929.
Box 2 Folder 21
Letters, M-R, to Mauchly (from Victorine Mumma, S. Page Nelson (Johns Hopkins University), Marion North, Helen S. Palmer (his aunt), C.W. Park, C.B. Penney, Jr., William J. Peters, J.W. Phillips, Kitty Rankine, and Lee Rittenhouse), 1925-1932.
Box 2 Folder 22
Letters, R, to Mauchly (from Charles Ritter and Curtis Ritter), 1925-1932.
Box 2 Folder 23
Letters, R, to Mauchly (from Martha Roberts), 1925-1929.
Box 2 Folder 24
Letters, R-S, to Mauchly (from Ralph E. Root, Clyde B. Sargent, Hazel Scaife, C.L. Schaeffer, Naomi Scheidermantel (his grandmother), Gertrude Schultz, R.C. Shamberger, Pauline Sickler, Fay Smead, Albert Smith, F. Howard Smith, and Mildred Smith), 1925-1932.
Box 2 Folder 25
Letters, S, to Mauchly (from Gerard Snell, Edward Stafford, Claire W. Stone, George W. Stone, Elinor Strom, and Laurance Stuntz), 1925-1927.
Box 2 Folder 26
Letters, T-W, to Mauchly (from Teefy-Seltz Company, Lazare Teper, Mrs. Wilbur Thing, Edith Totten, G.T. Twyford, Winona von Ammon, Stockton Voorhees, Charles E. Waters, and Charlotte Wheeler), 1925-1930.
Box 2 Folder 27
Letters, W, to Mauchly (from Margaret E. White, Robert White, and Augustine Winnemore), 1925-1930.
Box 3 Folder 1
Letters, W-Z, to Mauchly (from Augustine Winnemore, Julien Winnemore, Jane H. Wylie, Thornton Zeigler, and Mary Zollner), 1926-1932.
Box 3 Folder 2
Notes and datasheets: Boole's method of Integration, Brook's formula, Compensation formula, Cubic network, and E-W spots, circa 1925-1932.
Box 3 Folder 3
Notes and datasheets: Finite differences, focus (record of), and miscellaneous formulas and tables, circa 1925-1932.
Box 3 Folder 4
Notes and datasheets: Temperature control, circa 1932.
Box 3 Folder 5
Notes and datasheets: Tensor analysis, 1929-1930.
Box 3 Folder 6
Notes and datasheets: Miscellaneous, circa 1925-1932.
Box 3 Folder 7
Notes and datasheets: Unidentified, 1931.
Box 3 Folder 8
Official personal documents, including marriage certificate, insurance medical report, and driver's license, 1926-1932.
Box 3 Folder 9
Personal notes: Data collected on Christmas cards and gifts, acquaintances, "girls to whom I have given special attentions," record of snapshot distribution, dances, stamp language, and endings of letters, 1925-1930.
Box 3 Folder 10
Personal notes: Puzzles and trick problems, reading lists, and recipes, 1926-1929.
Box 3 Folder 11
Personal notes: Schedules and calendars (hand-drawn), 1926-1928.
Box 3 Folder 12
Personal notes: Miscellaneous, circa 1925-1932.
Box 3 Folder 13
Teaching work: Physics I, lectures and exams, 1930-1932.
Box 3 Folder 14
Teaching work: Physics I, manual, parts I and II, by J.C. Hubbard, circa 1930-1932.
Box 3 Folder 15
Theater programs, 1926-1932.
Box 3 Folder 16
Tutoring, advertisements for and accounts, circa 1926-1932.
Box 3 Folder 17
Writings by Mauchly, articles in Johns Hopkins Newsletter, Volume XXX, 1925 October-December.
Box 3 Folder 19
Writings by Mauchly, dissertation, "The Structure of the Third Positive Group of Carbon Monoxide", 1932.
Box 3 Folder 20
Writings by Mauchly, "The International Point of View in Education," essay submitted to contest for the S.S. Ryndam Scholarship , 1927 May.
Box 3 Folder 21
Writings by Mauchly, submissions to Black and Blue Jay, the Judge, and possible others, 1927-1931.
Box 3 Folder 22
Writings by Mauchly, "Ye Knews-Letter" files, circa 1925-1932.
Box 3 Folder 23
Writings by others, articles regarding polarization, radio-telegraphy, frequency distribution, atmospheric disturbances, and waves, 1926-1929.
Box 3 Folder 24
Financial records including accounts, bills, and receipts, 1932-1933.
Box 3 Folder 25
Letters from Mauchly regarding employment, 1933 March-September.
Box 3 Folder 27
Letters to Mauchly from J.B. Blum, Betty L. [Chuier], R.M. Cowells, Jack Highlands, J. Hillman Hollister, Rachel Mauchly (his mother), Charles Ritter, Gerta and William Urry, Edward Walzl (his brother-in-law), John Wheeler, and Augustine Winnemore, 1932-1933.
Box 3 Folder 26
Abbot-Higgins (letters from Mauchly to Dr. C.G. Abbot, Herbert L. Alkire, Richard L. Anderson, Dr. J.V. Atanasoff, George W. Bailey, Dr. Lyman J. Briggs, Dr. C.F. Brooks, Clarostat Manufacturing Company, H. Helm Clayton, Dr. W.G. Cochran, William S. Cramer, Dr. Wheeler P. Davey, Dr. W.E. Demig, John DeWire, Dr. G.H. Dicke, E.L. Dodd, Dr. C. Duncan, Dr. A.L. Durkee, Dr. C. Harrison Dwight, Edward S. Ellis, Dr. W.C. Elmore, Dr. John W. Fertig, Dr. John A. Fleming, Mr. and Mrs. William Frank, Charles W. George, Dr. S.L. Gerhard, Dr. Meyer A. Girshick, O.H. Gish, and Edgar Higgins), 1934-1941.
Box 3 Folder 28
Inter-County Hospitalization Plan, Inc.-Ritter (letters from Mauchly to Inter-County Hospitalization Plan, Inc., J. Leonard Halderman, W.R. Ham, Teru "Tay" Hayashi, D.L. Helfferich, Dr. Harold Hotelling, Dr. J.C. Hubbard, Herschel C. Ice, Mr. Waldemar Kaempffert, E.L. Keller, J.B. Kincer, Lila F. Knudsen, Dr. Irving Krick, Mr. Gabriel Kron, Dr. D.H. Lehmer, Alma Ludwig, James Lyons, William A. Luby, William G. Madow, Rachel Mauchly (his mother), N.E. McClure, Knox McIlwain (Moore School of Electrical Engineering), Mrs. George S. Monk, J.H. Mowrey, New York Times editor, Dr. Omwake, Larry Page, R. Parkinson, Dr. C.L. Pekeris, Dr. J.A. Peoples, F.D. Richey, and Charles and Curtis Ritter), 1936-1941.
Box 3 Folder 29
Rossby-Zeleny (letters from Mauchly to Dr. C.G. Rossby, Walter C. Russell, Dr. Charles F. Sarle, T.R. Schellenberg, Thomas Schonfeld, "Computer" Schultz, Dr. Raymond Seeger, W.L. Severinghaus, F. Howard Smith, C. Richard Snyder, A.B. Soble, Armand, N. Sptiz, Laurance Stuntz, Dr. W.F.G. Swann, Lazare Teper, Dorothy Thomas, Dr. G.R. Wait, George A. Walton, Edward Walzl (his brother-in-law), R.H. Weightman, Dr. H. Wexler, Dr. S.S. Wilks, Dr. H.C. Willet, T. Carrol Willson, George Winchester, J. Wolfowitz, John Zeleny, and unidentified), 1933-1941.
Box 3 Folder 30
Family (letters from Mauchly to his wife and children: Mary Walzl, Jimmy, and Sidney Mauchly), 1933-1941.
Box 3 Folder 31
Atanasoff-Dwight (letters to Mauchly from John V. Atanasoff, J. Bartels, E.H. Bowie, Nicholas Brentin, Carl C. Chambers, Joe Chapline, H. Helm Clayton, Allen T. Craig, William S. Cramer, B.T. Darlin, W. Edwards Deming, John DeWire, Edward L. Dodd, and C. Harrison Dwight), 1934-1941.
Box 3 Folder 32
Eckert-Krick (letters to Mauchly from Ruth Eckert, Edward S. Ellis, John W. Fertig, Jno. A. Fleming, Max Folger, Sue Frank, Howard M. Fry, Charles W. George, M.A. Girshick, O.H. Gish, Margaret Goldsmith, José C. Gomez, W.B. Goldman, R.W. Gray, P.M. Hamer, Reginald H. Helfferich, Edgar Higgins, Harold Hotelling, Teru "Tay" Hayashi, Herschel C. Ice, Waldemar Kaempffert, E.L. Keller, James H. Kimball, W.A. Kline, Lila F. Knudsen, and Irving P. Krick), 1934-1941.
Box 3 Folder 33
Laudenslager-Russell (letters to Mauchly from E.B. Laudenslager, L.H. Lehmer, Bela A. Lengyel, [J.M.] Levitt, Elias A. Lucyk, Alma Ludwig, James Lyons, R.B. McCafferty, N.E. McClure, Harold Pender (dean of Moore School of Electrical Engineering), G. Robert Mezger, Ardis T. Monk, John B. Morgan, Brian O'Brien, George L. Omwake, Larry Page, Royal Parkinson, J. Patterson, Philadelphia Electric Company, David B. Pugh, Charles and Curtis Ritter, and Walter C. Russell), 1933-1941.
Box 3 Folder 34
Sanderson-Wilson (letters to Mauchly from John Sanderson, Charles F. Sarle, Thomas Schonfeld, Raymond J. Seeger, Miguel Selga, John H. Sencenbach, Walter A. Shewhart, John C. Slater, C. Richard Snyder, Willard Snyder, A.B. Soble, Armand N. Spitz, Laurance F. Stuntz, Lloyd W. Taylor, Lazare Teper, Dorothy Thomas, G.R. Wait, R.R. Weaver, Robert Weidenhammer, S.S. Wilks, H.C. Willett, George Winchester, Herb Wilson, and unidentified), 1935-1941.
Box 3 Folder 35
Family (letters to Mauchly from his wife and children: Mary Walzl, Jimmy and Sidney Mauchly), 1940.
Box 4 Folder 1
Alumni and former students of Johns Hopkins University, letters to , 1934-1940.
Box 4 Folder 2
Scientific equipment and books (letters to and from Mauchly regarding orders), 1933-1940.
Box 4 Folder 3-5
Student recommendations, fellowships, and scholarships (letters to and from Mauchly regarding) , 1933-1941.
Box 4 Folder 6
Mary Mauchly (letters to and from Mary Mauchly--not to or from John Mauchly), 1934, 1940-1941.
Box 4 Folder 7
Astrology and the "Brotherhood of Light", 1937-1939.
Box 4 Folder 8
Extrasensory perception (ESP) and humorous physics, 1933-1941.
Box 4 Folder 9
Weather forecasts, 1937-1939.
Box 4 Folder 10
Weather-related, circa 1936-1940.
Box 4 Folder 11
Wheat and grain prices and trading, circa 1938-1939.
Box 4 Folder 12
Academic testing (particularly in physics), 1935-1938.
Box 4 Folder 13
Acoustics, circa 1934.
Box 4 Folder 14
Allison Magneto-Optic Effect, 1937.
Box 4 Folder 15
Altender & Sons, patent and instrument information (includes some correspondence), 1938.
Box 4 Folder 16
Alternating current, circa 1933-1941.
Box 4 Folder 17
"Applications", circa 1933-1941.
Box 4 Folder 18
Auto-correlation, 1938-1941.
Box 4 Folder 21
Automatic devices to aid in educational testing, 1936-1941.
Box 4 Folder 22
Ciphers, 1940.
Box 4 Folder 23
Classical T-values, circa 1933-1941.
Box 4 Folder 24
Cosmic rays, 1937-1939.
Box 4 Folder 25
Correlation, 1937-1940.
Box 4 Folder 26
Correlations: Solar-meteorological, 1937-1939.
Box 4 Folder 27
Diurnal variation in magnetism, 1938.
Box 4 Folder 28
Ebro faculae, circa 1935.
Box 4 Folder 32
Electro-magnetic waves through ionized gas, 1934.
Box 4 Folder 29
Electrometer tube, 1933-1934.
Box 4 Folder 30
Ellipticity and sphericity (includes correspondence and drafts), 1937-1940.
Box 4 Folder 31
Error theory, circa 1933-1941.
Box 4 Folder 33
ex by binomial expansion, circa 1933-1941.
Box 4 Folder 34
East and west solar eruptions selections, circa 1939.
Box 4 Folder 35
Faculae areas, circa 1939.
Box 4 Folder 36
Faculae vs. NOMPO, circa 1933-1941.
Box 4 Folder 37
Fadeouts, circa 1936.
Box 4 Folder 38
Flocculi, 1937.
Box 4 Folder 39
Geophysical cycles (based upon works of Dr. Julius Bartels), 1935-1939.
Box 4 Folder 40
Geophysikalisches Instituts Potsdam, Potsdamer Erdmagnetische Kennziffern, K(1)K(2), circa 1940.
Box 5 Folder 1
Harmonic coefficients and analysis, 1937-1940.
Box 5 Folder 2
Hotelling method, 1937.
Box 5 Folder 3
Hot wire equations, circa 1933-1941.
Box 5 Folder 4
"Ideas and inventions", 1934-1938.
Box 5 Folder 5
Inductance, circa 1933-1941.
Box 5 Folder 6
Interdiurnal variability, circa 1933.
Box 5 Folder 7
k cot µ=m solution, circa 1933-1941.
Box 5 Folder 8
Knudsen, Lisa, Mauchly's notes on her research, 1936-1940.
Box 5 Folder 9
KPO Daily (maybe Pohang Airport, Korea), circa 1941.
Box 5 Folder 10
Labrouste smoothing and other economy-related topics (Debt deflation theory of the Great Depression, the Business cycle theory, and Econometrica), 1937.
Box 4 Folder 19
Lagrange's method of undetermined multipliers, 1937.
Box 5 Folder 11
Latitude ratio and longitude distribution, circa 1933-1941.
Box 5 Folder 12
Magnetic character, 1938-1941.
Box 5 Folder 13
Metals (permalloy, perminvar, and steel), circa 1938.
Box 5 Folder 14
"Miscellaneous calculations sheets", circa 1933-1941.
Box 5 Folder 44
Moment calculations, circa 1933-1941.
Box 5 Folder 15
Multiple factor analysis, 1937.
Box 5 Folder 16
Network theorem, circa 1943.
Box 5 Folder 17
Nomographs, 1937.
Box 5 Folder 18
Orthogonal regression, 1937.
Box 5 Folder 19
Phonograph, circa 1933-1941.
Box 5 Folder 20
Physics and weather statistics projects (includes some correspondence and drafts), 1938-1941.
Box 5 Folder 21
Planetary suntides, circa 1933-1941.
Box 5 Folder 22
Potential gradient data, 1933-1937.
Box 5 Folder 23
Notebook with problems and solutions, 1934-1936, 1940.
Box 5 Folder 24
Pulsations, circa 1939.
Box 5 Folder 25
Quantum mechanics, circa 1933-1941.
Box 5 Folder 26
Quotations by Jeffreys, W. Edward Deming, Karl Pearson, and von Karman, circa 1938-1940.
Box 5 Folder 27
S2 variance, Manila, 1938.
Box 5 Folder 28
Sampling distribution of statistics obtained from non-linear equations, certain determinant equations, and least squares, 1939.
Box 4 Folder 20
Self-correlated series, 1937-1940.
Box 5 Folder 29
Serial correlation, circa 1940.
Box 5 Folder 30
Slide rule information, circa 1933-1941.
Box 5 Folder 31
Statistical tests, circa 1939.
Box 5 Folder 32
Statistics of the two-dimensional vectors, 1937-1939.
Box 5 Folder 33
Surface correlation or association, 1939-1940.
Box 5 Folder 34
Syphilis (humorous), circa 1933-1941.
Box 5 Folder 35
Tensor analysis, circa 1929.
Box 5 Folder 36
Thermostatic devices and control circuits, 1935-1938.
Box 5 Folder 37
Tides, circa 1933.
Box 5 Folder 38
Time series, circa 1933-1941.
Box 5 Folder 39
Tintner selection, 1939.
Box 5 Folder 45
Variance, analysis of (also called K-samples), circa 1939.
Box 5 Folder 40
Vector correlation, 1937-1939.
Box 5 Folder 41
Weather-related notes and data, circa 1933-1941.
Box 5 Folder 42
X-theory, circa 1933-1941.
Box 5 Folder 43
Unidentified, circa 1933-1941.
Box 5 Folder 46-47
Wilks, 1937.
Box 6 Folder 1
Zonal pressure index, 1938-1939.
Box 6 Folder 2
American Association for the Advancement of Sciences and Associated Societies, general meeting program, Pittsburgh, PA, 1934 December 7-1935 January 2.
Box 6 Folder 3
American Association of Physics Teachers, programs, 1934-1935.
Box 6 Folder 4
American Meteorological Society, meeting announcement, preliminary program, and notes, 1939-1940.
Box 6 Folder 5
American Geophysical Union, statutes and by-laws, membership lists, and meeting announcements, 1934-1939.
Box 6 Folder 6
Comité météorologique International, list of resolutions adopted (in French), 1937.
Box 6 Folder 7
Pennsylvania Conference of College Physics Teachers, programs, directories and photograph, 1935-1941.
Box 6 Folder 8
International Union of Geodesy and Geophysics, meeting, Edinburgh, Scotland, 1936.
Box 6 Folder 9
International Union of Geodesy and Geophysics, Seventh General Assembly, Washington, DC, agendas and publications, 1939 September 4-15.
Box 6 Folder 10-13
Mathematical Association of America and Institute of Mathematical Statistics, programs and lecture, 1938-1940.
Box 6 Folder 14
Cards: car registration, Selective Service, and voter registration, 1934-1940.
Box 6 Folder 15
Christmas gift/card list, 1937-1938.
Box 6 Folder 16
Insurance records: car, fire, life, theft, 1933-1941.
Box 6 Folder 17
Job applications, 1935-1938.
Box 6 Folder 18
"Journal", 1938 July-September.
Box 6 Folder 19
Leases and mortgages, 1934.
Box 6 Folder 20
Mary Walzl Mauchly, income statements and financial correspondence, 1933-1937.
Box 6 Folder 21
Newspaper clippings on Back, science, student peace movements, and World War II, 1934-1941.
Box 6 Folder 22
Political literature for Roosevelt, 1936.
Box 6 Folder 23
Receipts for household expenses and accounts, 1933-1941.
Box 6 Folder 24
Stock market information, 1934-1936.
Box 6 Folder 25
Theater programs, the bulk promoting performances of the Curtain Club of Ursinus College, 1934-1935.
Box 6 Folder 26
EE 14A, Machinery Laboratory experiments, 1941 January-February.
Box 6 Folder 27
Example coursework and exams from MIT, 1938-1939.
Box 6 Folder 25
Exams, electrical engineering and physics, 1937-1941.
Box 6 Folder 26
Introduction to science and other course information, 1934-1938.
Box 6 Folder 27
NYA Program, 1939.
Box 6 Folder 28
Petitions by students for Mauchly to lecture and comic lectures and poems, 1936-1940.
Box 6 Folder 32
Physics I, notes and problems to be solved, 1937.
Box 6 Folder 33
Receipts for books and inventory of journals that Mauchly owned, 1933-1938.
Box 6 Folder 34
Receipts for memberships to organizations and societies, 1933-1941.
Box 6 Folder 35
Receipts for scientific equipment, 1933-1936.
Box 6 Folder 36
Trips for physics classes, 1938.
Box 6 Folder 37
Drafts, circa 1933-1941.
Box 6 Folder 38
Schwenksville commencement address, 1941 May-June.
Box 6 Folder 39
"Structure of the Third Positive Group of CO Bands," co-authored with G.H. Dieke; "A New Approach to the Study of Terrestrial-Solar Relationships;" "Some Applications of Recent Statistical Tools;" and "World Wide Changes in Potential Gradient," coauthored with G.R. Wait , 1933, 1937.
Box 6 Folder 40
"Meteorological Effects of Solar Variations," "A Significance Test for Ellipticity in the Harmonic Dial," and "Significance Test for Sphericity of a Normal n-Variate Distribution" , 1939-1940.
Box 6 Folder 41
"Depressions of Mid-day Ion-densities in the F2-Region of the Ionosphere related to the Diurnal Variation in H" and "Voice of America Broadcast", circa 1933-1941.
Box 6 Folder 42
Abbot, C.G. (includes correspondence), 1936-1941.
Box 6 Folder 43
Bartels, J., notes on "Survey of the Physics of the High (Upper) Atmosphere," by unknown note taker, undated.
Box 6 Folder 44
Eisenhart, C and Frieda M. Swed, "On Certain Criteria for Testing the Homogeneity of k Estimates of Variance", 1939.
Box 6 Folder 45
Pender, Harold, notes on complex numbers, matrices, and vectors, 1939.
Box 6 Folder 46
Seely, Burton D., "An Approach to Problems Involving Disproportionate Frequencies", 1939.
Box 7 Folder 1
Miscellaneous, 1937-1939.
Box 7 Folder 2

Scope and Contents

From 1941 to 1946, Dr. John W. Mauchly attended courses at, was employed as an instructor by, and built (with J. Presper Eckert) the first electronic general-purpose computer at the University of Pennsylvania Moore School of Electrical Engineering. His work during this time is documented in Series II. Moore School of Electrical Engineering, University of Pennsylvania. The series is further divided into A. Clippings; B. Correspondence; C. Moore School records; D. Notes and datasheets; E. Organizations, memberships, and conferences; F. Patents (not Eckert or Mauchly); G. Personal and family documents; H. United States Government records; and I. Writings by others.

Researchers should be aware that there is very little material regarding the Electronic Numerical Integrator and Computer (ENIAC). Because this computer was constructed under the auspices of the United States Army, Ordnance Corps, Research and Development Command during World War II, material related to ENIAC's development would have been classified and Mauchly would not have been able to keep his records. Instead, these records are probably retained by the National Archives. Likewise, there are no records about the women programmers of ENIAC in this collection and there are very few records by or about J. Presper Eckert's work with Mauchly on the development of ENIAC in this series. Researchers interested in ENIAC should consult the ENIAC Patent Trial Collection, 1864-1973 (bulk: 1938-1971), UPD 8.10 and the Moore School of Electrical Engineering Office of the Director Records, 1931-1948, UPD 8.4 at the University of Pennsylvania Archives and Records Center.

Subseries A. Clippings contains newspaper and magazine clippings about a few items in which Mauchly was interested or involved. Of particular note are the clippings about the ENIAC after it was unveiled to the public. As is the case throughout the collection, a significant portion of material relates to weather and weather-forecasting.

Subseries B. Correspondence, includes both personal and professional letters. The professional correspondence is not particularly rich and, generally speaking, there is not a significant number of letters to or from any one particular correspondent. Researchers should be aware that correspondence from colleagues at the Moore School will be found in C. Moore School records.

Subseries C. Moore School records contains the bulk of materials in this series. While there is little information on the ENIAC, this subseries documents the workings of an institution during war-time and the teaching of engineers under the auspices of the Armed Forces Training Program. In particular, the bureaucracy resulting from working both for an academic institution and for the military is evident in many documents. Researchers will find work-related financial records; coursework from the classes Mauchly took during the summer of 1941; information about the Moore School lectures delivered in 1946; publications by the Moore School, including those relating to the Electronic Discrete Variable Automatic Computer (EDVAC), reports on the ENIAC, and published versions of the Moore School lectures; and coursework from the classes that Mauchly taught during his tenure at the University of Pennsylvania. Researchers should be aware that the student work and exams (located in box 9, folders 13-16, 19, and 20-24) are restricted due to the Family Educational Rights and Privacy Act of 1974. Researchers will also find intramural correspondence, most of which relates to requirements of the United States Army and/or the University for reporting attendance, grades, or other administrative matters. Of importance, however, are both Mauchly's resignation letter which includes his reasons for leaving the University of Pennsylvania and the dean Harold Pender's acceptance of Mauchly's resignation (found in box 7, folder 29).

Subseries D. Notes and datasheets shows many of Mauchly's interests and includes his notes, formulas, math problems, as well as data gathered from other sources. Many of these interests were life-long, in particular Mauchly's interest in weather and forecasting; and therefore, researchers should consult the Notes and datasheets groupings in other series for later research on the same topics. In this group of notes and datasheets, Mauchly's interest in and work with the development of the computer industry is well documented.

Subseries E. Organizations, memberships, and conferences demonstrates that as Mauchly became more involved in his profession, as a teacher, a scientist, and an expert in the field of computers, he increasingly joined societies and attended conferences for his continuing education. Researchers will find that he continued to associate with these organizations throughout his career, and should therefore, consult the subseries titled Organizations, memberships, and conferences in other series for later records.

Subseries F. Patents (not Eckert or Mauchly) contains collected information regarding other patents.

Subseries G. Personal and family documents includes records about Mauchly's home life, including financial records, medical records, insurance records, poems and humorous stories, puzzles, and voter registration cards. Of interest may be the documents which record life during World War II, including both the Selective Service registration cards and the ration books.

Subseries H. United States Government records contains records from an elementary course in cryptanalysis offered by the United States Navy; memos and passes from the Naval Ordinance Laboratory in Maryland, and reports for the Mathematical Computing Advisory Panel of the Office of Research and Inventions, as well as a few other publications. During World War II, Mauchly was associated with the United States Government (for the most part the United States Navy) through his work with the Moore School.

Subseries I. Writings by others includes papers, articles and reports which Mauchly read and kept. These writings are frequently not in published form, but appear to be items sent specifically to Mauchly. In this group, there are several writings related to the ENIAC, including those by J.G. Brainerd, Morris Freedman, and L.E. Levick.

Defense and World War II, circa 1942-1946.
Box 7 Folder 3
Electronic devices, circa 1941-1946.
Box 7 Folder 4
ENIAC, 1946.
Box 7 Folder 5
Railways, circa 1941-1946.
Box 7 Folder 6
Weather related, circa 1941-1946.
Box 7 Folder 7
Miscellaneous, circa 1941-1946.
Box 7 Folder 8
Books, letters and ads regarding scientific books to purchase, circa 1941-1946.
Box 7 Folder 9
Civil Air Patrol, letters to Mauchly regarding reports, supplies, and training, 1945.
Box 7 Folder 10
Employment with the Naval Ordinance Laboratory, 1944-1946.
Box 7 Folder 11
Letters of recommendation and related material regarding Mauchly's former or potential students, 1941-1946.
Box 7 Folder 12
Letters to Mauchly and lists regarding books borrowed from the Moore School Library, 1943.
Box 7 Folder 13
Letters to Mary Mauchly from Ruth and Harvey Carter, L.A. Crowell, and Edward and Florence Walzl, 1940-1943.
Box 7 Folder 14
Letters from Mauchly to George W. Bailey, D.W. Bishop, C.F. Brooks, H. Helm Clayton, William Cramer, John DeWire, Sherwood T. Ericson, J.E. Hawkins, Teru "Tay" Hayashi, Everett Kimball, Jr., Reverend R. Edwin Kutz, Robert Luginbuhl, Dr. H. Rademacher, R.W. Reichelderfer, Sally Rexon, Otto Schneider, S.J. Sindeband, Lazare Teper, William F. Tomlinson, Edward Walzl (his brother-in-law), Christian Westphalen, T.B. Whitson, Charlotte Witmer, 1941-1946.
Box 7 Folder 15
Letters to Mauchly from G. Edoard Aghib, Herbert S. Bennett, Harold A. Beyer, Charles F. Brooks, V. Norma Braker, Harvey L. Carter, Lloyd A. Carver, C. West Churchman, H. Helm Clayton, C.H. Haskell, John DeWire, Mary DiMedio, Sherwood T. Eriksson, Jno. A. Fleming, Irwin L. Hand, H.O. Hartley, Teru "Tay" Hayashi, Ralph S. Hayes, Edgar Higgins, J. Robert James, Anna C. Kauffman, Everett Kimball, Jr., R. Edwin Kutz, Vivian Lewis, Robert Luginbuhl, John McElinney, Michael Melnick, F.W. Reichelderfer, Sally Rexon, Mary E. Rosciola, L.F. Safford, Ernest Schultz, Dorothy T. Shelley, Dorothy Shisler, Lazare Teper, William F. Tomlinson, John W. Tukey, Stephen E. Walkley, J. Stroud Weber, Christian Westphalen, Harold A. Wheeler, T. Barclay Whitson, and Charlotte Whitmer , 1941-1946.
Box 7 Folder 16
Announcements for evening graduate work in electrical engineering , 1941-1946.
Box 7 Folder 17
Announcements for the accelerated academic program, 1942.
Box 7 Folder 18
Application for federal employment (Mauchly's application), 1945 July.
Box 7 Folder 19
Armed Forces Training Program, instructions and notices for reporting absences and grades and course descriptions, 1943-1944.
Box 7 Folder 20
Bank statements and cancelled checks, 1942-1946.
Box 7 Folder 21-24
Banking records and receipts related to Moore School purchases (books and scientific equipment), 1941-1944.
Box 7 Folder 25
Bills, particularly phone bills relating to Moore School, 1942-1945.
Box 7 Folder 26
Correspondence (University Intramural): Burks, Arthur W., Air Warden, 1941-1943.
Box 7 Folder 27
Correspondence (University Intramural): Graduate School, 1941-1943.
Box 7 Folder 28
Correspondence (University Intramural): Pender, Harold, dean of Moore School (includes a copy of Mauchly's resignation and Pender's acceptance of resignation), 1941-1946.
Box 7 Folder 29
E.C. Meeting, minutes, 1945 November 9.
Box 7 Folder 30
Coursework: Summer school work, 1941 summer.
Box 7 Folder 31
Coursework: Assignment 2, circa 1941.
Box 7 Folder 32
Coursework: Course 101 (Pender), circa 1941.
Box 7 Folder 33
Coursework: Math 147 (Higher Mathematics for Engineers), lectures, 1941-1942.
Box 7 Folder 34-35
Coursework: Problems in Electricity and Magnetism, problems and notes, 1941.
Box 7 Folder 36
Identification card, library stack permit, and Houston Hall discount card, 1943-1944.
Box 7 Folder 37
Moore School Lectures: Theory and Techniques for Design of Electrical Digital Computers (lecture 3), 1946 July 8.
Box 7 Folder 38-39
Moore School Lectures: Use of Function Tables with Computing Machines (lecture 9), draft, 1945 July 12.
Box 7 Folder 40
Moore School Lectures: Conversion between Binary and Decimal Number Systems (lecture 25), 1946 July 29.
Box 7 Folder 41
Moore School Lectures: Machine Design and Instruction Codes (lecture 37), 1946 August 9.
Box 7 Folder 41
Moore School Lectures: Round Off Errors and the Propagation of Error (lecture 48), 1946 August 30.
Box 7 Folder 41
Moore School publications: Bibliography of Literature on Calculating Machines, by Irven Travis, 1938.
Box 7 Folder 42
Moore School publications: Report on EDVAC, by John Von Neumann (first draft), 1945 June 30.
Box 7 Folder 43
Moore School publications: Automatic High-Speed Computing: A Progress Report on the EDVAC, 1945 September 30.
Box 7 Folder 44
Moore School publications: Progress Report on the EDVAC, Volume 1, 1946 June 30.
Box 7 Folder 45
Moore School publications: Progress Report on the EDVAC, Volume II, 1946 June 30.
Box 8 Folder 1
Moore School publications: The EDVAC: Preliminary Report on Logic and Design, by G.W. Patterson, etc., 1948 February 16.
Box 8 Folder 2-3
Moore School publications: Functional Description of the EDVAC, Volume 1, 1949 November 1.
Box 8 Folder 4
Moore School publications: Functional Description of the EDVAC, Volume II, 1949 November 1.
Box 8 Folder 5
Moore School publications: Errata for Functional Description of the EDVAC, Volumes I and II, 1949 November 1.
Box 8 Folder 6
Moore School publications: Electricity and Electromagnetism for Engineers, by Harold Pender and S. Reid Warren, Jr., 1940-1941.
Box 8 Folder 7-8
Moore School publications: Report on the ENIAC, Part I: Technical Description of the ENIAC, by Adele G. Goldstein, circa 1945-1946.
Box 8 Folder 9-10
Moore School publications: Report on the ENIAC, Part II: Technical Description of the ENIAC, by Harry D. Huskey, circa 1945-1946.
Box 8 Folder 11
Moore School publications: The Moore School Record, 1941.
Box 8 Folder 12
Moore School publications: Outline of Results of Computations, 1943 March 16.
Box 8 Folder 13
Moore School publications: PY (EDVAC) report, summary, draft, and stock list, 1941-1946.
Box 8 Folder 14-15
Moore School publications: Record Book, 1942.
Box 8 Folder 16
Moore School publications: Report on Project, Case 1 (handwritten draft), 1942 May.
Box 8 Folder 17
Moore School publications: Theory and Techniques for Design of Electronic Digital Computers, Volume I (Lectures 1-10), 1947 September 10.
Box 8 Folder 18
Moore School publications: Theory and Techniques for Design of Electronic Digital Computers, Volume I (Lectures 1-10), 1947 September 10.
Box 9 Folder 1-2
Moore School publications: Theory and Techniques for Design of Electronic Digital Computers, Volume II (Lectures 11-21), 1947 November1.
Box 9 Folder 3-5
Moore School publications: Theory and Techniques for Design of Electronic Digital Computers, Volume III (Lectures 22-33), 1948 June 30.
Box 9 Folder 6-8
Moore School publications: Theory and Techniques for Design of Electronic Digital Computers, Volume IV (Lectures 34-48), 1948 June 30.
Box 9 Folder 9-10
Moore School publications: Theory of Electronic Machines, Volume II, Alternating Currents, 1939.
Box 9 Folder 11
Teaching: Term teaching records and staff rosters, 1941-1946.
Box 9 Folder 12
Teaching: Electrical Engineering 6A (Direct Current Machinery), exams and grades (RESTRICTED), 1942.
Box 9 Folder 13
Teaching: Electrical Engineering 7A (Direct Current Machinery Laboratory), exams and grades (RESTRICTED), 1941-1942.
Box 9 Folder 14
Teaching: Electrical Engineering 14WB and 14WC (Electronics), graded (RESTRICTED), 1943 June 1.
Box 9 Folder 15
Teaching: Electrical Engineering 9A (Alternating Current Circuit), exams and grades (RESTRICTED), 1943.
Box 9 Folder 16
Teaching: Electrical Engineering 14 (Laboratory Experiments), problems, solutions, and sample calculations, 1944.
Box 9 Folder 17
Teaching: Electrical Engineering 103 (Engineering Physics), problems, solutions, and 1936-1938 correspondence, circa 1941-1946.
Box 9 Folder 18
Teaching: Electrical Engineering 117 (Acoustics), exams and grades (RESTRICTED), 1942.
Box 9 Folder 19
Teaching: Electrical Engineering 403 (Electrical Measurements), course information, exams, and grades (RESTRICTED), 1943-1944.
Box 9 Folder 20-22
Teaching: Electrical Engineering 417 (Distributed Constants), exams and grades (RESTRICTED), 1944.
Box 9 Folder 23
Teaching: Electrical Engineering 617 (Acoustics), problems, notes, exams, and grades (RESTRICTED), 1945-1946.
Box 9 Folder 24
Teaching: Math 647, lectures on Van der Pol's equation and Dr. J. A. Shohat's method of solving the equation, circa 1944.
Box 9 Folder 25
Teaching: Sample courses in statistics from the University of North Carolina and Columbia University, 1944-1946.
Box 9 Folder 26
Time sheets and notes about personnel hours worked, 1942-1943, 1945.
Box 10 Folder 1-2
War Production Board, preference rating application for Model Act-10M Marchant Electric Calculating Machine, 1942.
Box 10 Folder 3
155 MM Howitzer, 1943.
Box 10 Folder 4
500 volt D.C. (open circuit), 1942 March.
Box 10 Folder 5
Alternating current stability, 1942 February 25.
Box 10 Folder 6
Atomic energy, 1945.
Box 10 Folder 7
Atmospheric radiation, circa 1941-1946.
Box 10 Folder 8
Battery-powered portable insulation testing devices, circa 1942.
Box 10 Folder 9
B-series evaluation, circa 1941-1946.
Box 10 Folder 10
Calculating machines, circa 1941-1946.
Box 10 Folder 11
Census Bureau and computers, 1945.
Box 10 Folder 12
Circle diagrams, circa 1943.
Box 10 Folder 13
Computer claims 10 and 12, circa 1941-1946.
Box 10 Folder 14
Cosmic data from Science Services, 1941 June-December.
Box 10 Folder 15
Cryptanalysis and sorting problems, 1945.
Box 10 Folder 16
Cryptography, 1941, 1944.
Box 10 Folder 17
Cubic equations, circa 1941-1946.
Box 10 Folder 18
D.C. machines: IIIc problems, circa 1941-1946.
Box 10 Folder 19
Diurnal temperature ranges, circa 1944.
Box 10 Folder 20
Doolittle's solution, circa 1941-1946.
Box 10 Folder 21
Duovent, circa 1943.
Box 10 Folder 22
ENIAC functions compared to other computers, 1944-1945.
Box 10 Folder 23
Experiments (in bound notebook), circa 1943.
Box 10 Folder 24
Exponential differential integration/Runge adaptation and method, circa 1941-1946.
Box 10 Folder 25
Fluorescent lamp power units, 1941-1942.
Box 10 Folder 26
G-Table, circa 1941-1946.
Box 10 Folder 27
Geological data, undated.
Box 10 Folder 28
Graph paper samples, circa 1941-1946.
Box 10 Folder 29
Groups of basic networks, circa 1943.
Box 10 Folder 30
Interpolation, circa 1941-1946.
Box 10 Folder 31
Interpolation and iterative methods, circa 1941-1946.
Box 10 Folder 32
Laplacian transforms, circa 1942.
Box 10 Folder 33
MacIlwain and Brainerd electricity problems, circa 1941-1946.
Box 10 Folder 34
Magnetic calculating machine, disclosure of (disks or drums), 1944 January 29.
Box 10 Folder 35
Magneto striction, circa 1941-1946.
Box 10 Folder 36
Mathematical error theory or problem for electrical measurements, circa 1941-1946.
Box 10 Folder 37
Matrices, circa 1941-1946.
Box 10 Folder 38
Matrices: Inverse by sub matrix method, circa 1941-1946.
Box 10 Folder 39
Matrices: Symmetric and non-symmetric, circa 1941-1946.
Box 10 Folder 40
"Megger", 1942.
Box 10 Folder 41
Naval Ordinance Laboratory problem, circa 1944.
Box 10 Folder 42
Orbits, circa 1941-1946.
Box 10 Folder 43
Ordinate harmonic analysis, circa 1941-1946.
Box 10 Folder 44
P20 U.S. harmonic coefficients, circa 1942.
Box 10 Folder 45
Power system stability, circa 1942.
Box 10 Folder 46
Problems: Absolute value, ladder-box, and mechanical, circa 1941-1946.
Box 10 Folder 47
Radiation and cloudiness, circa 1941-1946.
Box 10 Folder 48
Radiation resistance, 1943 January-April.
Box 10 Folder 49
Rayleigh, Robert John Strutt (notes by Mauchly), circa 1941-1946.
Box 10 Folder 50
RCA constant voltage supply, circa 1941-1946.
Box 10 Folder 51
SCR-602-T3 (Camp Evans Signal Laboratory), 1943 April-May.
Box 10 Folder 52
Solar influence on Earth's weather, circa 1942.
Box 10 Folder 53
"Standard Megohmer" of Herman H. Stricht Co., Inc., circa 1942.
Box 10 Folder 54
Symmetric smoothing formula and experiments, 1942.
Box 10 Folder 55
Temperatures for Texas, North Dakota, Utah, New Mexico, and Oregon, circa 1945.
Box 10 Folder 56
Theory of dimensions, 1941 July.
Box 10 Folder 57
Transmission disturbance, circa 1946.
Box 10 Folder 58
Transmission line cable calculations, ultra high frequencies (UHF), circa 1943-1944.
Box 10 Folder 59
Truncation errors, circa 1941-1946.
Box 10 Folder 60
United States Census Bureau, William Madow discussion, 1944 October 9.
Box 10 Folder 61
Vector analysis, appendix: introductory notes on vector analysis, circa 1941-1946.
Box 10 Folder 62
"Vibrotest," insulation testing instrument, 1942.
Box 10 Folder 63
Weather-related notes, circa 1941-1946.
Box 10 Folder 64
Wwedensky and Maizels/Fraunhofer diffraction equation, 1941-1942.
Box 10 Folder 65
Unidentified, 1940-1944.
Box 10 Folder 66-67
American Association of Scientific Workers, Philadelphia branch, meeting announcements, programs, and newsletters, 1940-1942.
Box 10 Folder 68
American Association of Physics Teachers, meeting announcements, programs, and reports, 1940-1943.
Box 10 Folder 69
American Geophysical Union, membership information, meeting announcements, constitution and by-laws, and programs, 1941-1944.
Box 10 Folder 70
American Mathematical Society, programs and notes, 1943-1944.
Box 10 Folder 71
American Meteorological Society, meeting announcements, programs, constitution and bylaws, and dues information, 1941-1946.
Box 11 Folder 1
American Physical Society, meeting announcements and dues information, 1941.
Box 11 Folder 2
American Statistical Association, membership information, 1945.
Box 11 Folder 3
Engineers Club of Philadelphia, meeting announcements, correspondence, and biographical information supplied by Mauchly, 1942.
Box 11 Folder 4
Institute of Aeronautical Sciences, membership information, 1942.
Box 11 Folder 5
Institute of Mathematical Statistics, meeting announcements, programs, and by-laws, 1941-1946.
Box 11 Folder 6
Institute of Radio Engineers (IRE), meeting announcements, programs, constitution and by-laws, and membership information, 1942-1944.
Box 11 Folder 7
Massachusetts Institute of Technology, draft of talk, "Design Considerations for High Speed Computing Machines", 1945 October 30.
Box 11 Folder 8
Pennsylvania Conference of College Physics Teachers, meeting announcements, circa 1941-1945.
Box 11 Folder 9
Patent 2,328,340 to Patent 2,351,0036, 1943-1944.
Box 11 Folder 10
Patent 2,353,083 to Patent 2,394,924, 1943-1946.
Box 11 Folder 11
Accounts, bills, and receipts, 1941-1946.
Box 11 Folder 12
Bank statements and cancelled checks, 1941-1943.
Box 11 Folder 13-15
Book notices and receipts for books purchased, 1941-1946.
Box 11 Folder 16
Driver's licenses, 1942-1945.
Box 11 Folder 17
Income tax documents, 1941-1946.
Box 11 Folder 18
Life insurance information, 1941-1946.
Box 11 Folder 19
Medical and insurance information, 1941-1946.
Box 11 Folder 20
Insurance records: Travellers, 1942.
Box 11 Folder 21
Pay stubs.
Box 11 Folder 22
Poems and humorous stories (some authored by Harvey L. Carter; other authors unknown), circa 1941-1946.
Box 11 Folder 23
"Puzzles" (largely mathematical), circa 1941-1946.
Box 11 Folder 24
Railway time tables, 1941-1946.
Box 11 Folder 25
Selective Service registration cards, 1940-1945.
Box 11 Folder 26
Stocks and business projections, 1941-1946.
Box 11 Folder 27
Voter registration card, 1943.
Box 11 Folder 28
War ration book, circa 1941.
Box 11 Folder 29
Engineering Defense Training Programs (University of Pennsylvania, Ohio State University, and Ursinus College), 1941-1942.
Box 11 Folder 30
Guide for Preparation of a Standard Practice Procedure for Safe Guarding Classified Information, Office of Industrial Security, undated.
Box 11 Folder 31
United States Navy, elementary course in cryptanalysis, 1941.
Box 11 Folder 32
United States Navy, Naval Ordinance Laboratory memos, 1944-1946.
Box 11 Folder 33
United States Navy, Naval Ordinance Laboratory pass and travel records, 1945.
Box 11 Folder 34
United States Navy, Office of Research and Inventions, Mathematical Computing Advisory Panel, report and outline form of instructions, circa 1946.
Box 11 Folder 35
American Institute of Electrical Engineers, technical papers, 1941, 1943.
Box 11 Folder 36
Blewett and Paulhus, "Type Catalog", circa 1943.
Box 11 Folder 37
Brainerd, J.G., "Applied Mathematics Panel (AMP) Report on ENIAC", 1944-1945.
Box 11 Folder 38
Cochran, W.G., "Some Theoretical Aspects of the Use of Transformations in the Statistical Analysis of Replicated Experiments", circa 1941-1946.
Box 11 Folder 39
Cox, Gertrude M., "Combinatorial problems in the design of experiments", circa 1941-1946.
Box 11 Folder 39
Emmons, H.W. and J.G. Brainerd, "Temperature Effects in a Laminar Compressible-Fluid Boundary-Layer Along a Flat Plate", circa 1941-1946.
Box 11 Folder 39
Fawcett, C.D., "Produce or Perish", circa 1941-1946.
Box 11 Folder 39
Freedman, Morris, "Problem Solver" (about ENIAC), includes edits probably provided by Mauchly, 1946.
Box 11 Folder 40
Levick, L.E., questions about ENIAC with answers by Mauchly, 1946.
Box 11 Folder 41
Stibitz, George, "Digital Computers by A.A. Directors", 1942.
Box 11 Folder 42
Willet, H.C., editor, "A Statistical Analysis of Certain Problems of Extended Weather Forecasting", 1944 July 31.
Box 11 Folder 43
Williams, S.B. (Bell Telephone Laboratories), "Draft of General Description and Description of Routine Code for Computer X-66744", 1945 April 11.
Box 11 Folder 44
Young, Wilson, T., "A Layman's Viewpoint", circa 1941-1946.
Box 11 Folder 45
Unknown author, Chapter 4 of "Amplitude Variations", undated.
Box 11 Folder 46

Scope and Contents

Series III. Eckert-Mauchly partnership dates from 1946 to 1959 and is the most extensive group of materials in John Mauchly's papers. During this time, Eckert and Mauchly created two companies, the Electronic Control Company (ECC) which was in existence from 1946 to 1947 and the Eckert-Mauchly Computer Corporation (EMCC) which was in existence from 1947 to 1950. In 1950, the Eckert-Mauchly Computer Corporation was purchased by Remington Rand (which merged with Sperry Corporation in 1955), the company for which Mauchly continued to work until 1959.

This series is divided into A. Electronic Control Company (ECC) records; B. Eckert-Mauchly Computer Corporation (EMCC) records; C. Remington Rand/Sperry Rand records; D. Notes and datasheets, E. Organizations, conferences, and memberships; F. Personal and family documents; G. Talks by Mauchly; H. Teaching: "Mathematics for Digital Computers" at Temple University; I. Writings by Mauchly; and J. Writings by others.

Subseries A. Electronic Control Company (ECC) records contains material from that business venture. Researchers will find company information such as agreements, policies, personnel records, financial information, and publicity. The subseries also contains information on computers, including the Electronic Numerical Integrator and Computer (ENIAC) and the Electronic Discrete Variable Automatic Computer (EDVAC). Files on potential projects and contracts generally include correspondence and sometimes include proposals. It is frequently unclear when Electronic Control Company actually received a contract.

Subseries B. Eckert-Mauchly Computer Corporation (EMCC) records contain all existing material from that business venture. Researchers will find company records including board of directors material, business plans, bylaws, company histories, financial records, information about potential office space, patent applications, personnel records, and tax records. Of particular interest is the material relating to the Eckert-Mauchly Employee's Association and Roundtable. Agreements relating to a possible merger with American Totalisator Company, Inc. and the actual purchase of EMCC by Remington Rand can be found in this subseries. Files on the Binary Automatic Computer (BINAC) and Electronic Discrete Variable Automatic Computer (EDVAC) and early files on the Uniprinter and Universal Automatic Computer (UNIVAC) include instruction codes, manuals, programming, reports, specifications, and training guides. The file on potential projects and contracts generally includes correspondence and sometimes includes proposals. It is frequently unclear when Eckert-Mauchly Computer Corporation actually received a contract. This subseries also documents the recognition John W. Mauchly, J. Presper Eckert, and EMCC received for their inventions and work, particularly in the press, and publicity associated with the above mentioned computers and the 1949 award of the Potts Medal to both Eckert and Mauchly.

Subseries C. Remington Rand/Sperry Rand records is further divided into: i. Company records, ii. Correspondence, iii. Patents, iv. Projects, v. Publicity, vi. Research and "Problems," vii. Research and writing by staff, and viii. Research on other computers and computer companies, and ix. Training. This subseries, housed in boxes 13 to 26, is large and complicated and is therefore described in further detail at the Subseries.

Subseries D. Notes and datasheets shows many of Mauchly's interests and includes his notes, formulas, and math problems, as well as data gathered from other sources. Many of these interests were life-long, in particular Mauchly's interest in weather and forecasting; and therefore, researchers should consult the Notes and datasheets groupings in other series for earlier and later research on the same topics. In this subseries, the notes and datasheets are so extensive in relation to the weather, that they are grouped together under the term "weather-related."

Subseries E. Organizations, conferences, and memberships demonstrates that as Mauchly became more involved in his profession, and was considered an expert in the field of computers, he increasingly joined societies and attended conferences for his continuing education. Researchers will find that he continued to associate with some of these organizations throughout his career, and should, therefore, consult the subseries titled Organizations, memberships, and conferences in other series for earlier and later records. During this era of Mauchly's career, he was clearly a leader in the field--he served on committees, was asked to speak regularly, and was in communication with many others in business automation, computers, math and physics, programming, and other specialties.

Subseries F. Personal and family documents contains material that documents Mauchly's family and home life from 1946 to 1959. The bulk of these records are financial in nature, however Mauchly's personality is apparent in letters to and from family and friends, information relating to his children's education, his poetry, prose, and humorous writings, hospital receipts from the births of three of his children, and a list of potential names for his newborn daughter. Sympathy letters sent to John, Jimmy, and Sidney Mauchly following the drowning of Mauchly's first wife Mary on September 8, 1946 are located in this subseries.

Subseries G. Talks by Mauchly includes interviews, presentations, speeches, and talks. These talks are arranged chronologically. Whenever possible, the title of the speech, the organization to which Mauchly was speaking, the city, and the date are noted. Researchers should be aware that in some cases, Mauchly's speech does not actually exist, however, whenever that is the case, it isw noted in the folder title.

Subseries H. Teaching: "Mathematics for Digital Computers" at Temple University includes correspondence to and from Mauchly and Temple University, his plans for the course which Mauchly taught from 1953 to 1954, and his students' work. Researchers should be aware that the student work and exams are restricted due to the Family Educational Rights and Privacy Act of 1974.

Subseries I. Writings by Mauchly, articles and other writings. This subseries is arranged chronologically. Some writings were published but Mauchly appears never to have intended publishing others. Many of Mauchly's unpublished documents on topics of interest to him may have been written for his personal use and reference. When the information exists, researchers will find the title of the article, the title, volume and number of the publication in which it appeared, and the name of the co-author. Researchers should also consult the Office files in Series III. Eckert-Mauchly partnership, Subseries C. Remington Rand/Sperry Rand, i. Company records for other writings about Mauchly and his beliefs.

Subseries J. Writings by others, includes articles written by other scientists, physicists, and leaders in the field of computers. These writings are organized alphabetically by author and many do not appear to have been ready for publication. Instead, many of these seem to have been sent to Mauchly for review or because he was interested in the topic or author. These writings are not by staff members of ECC, EMCC, or Remington Rand; writings by staff are included in Subseries A., B. and C. within this series. These are also not the published writings by others which will be found in the later series, John W. Mauchly library, as yet unprocessed.

Agreement, letterhead, and envelopes, 1946-1947.
Box 12 Folder 1
Company policies, personnel, and notes, 1946-1947.
Box 12 Folder 2
Computing applications and problems to be solved, 1947.
Box 12 Folder 3
Electronic Discrete Variable Automatic Computer (EDVAC): Proposed programing and correspondence and notes regarding logical design of the EDVAC, 1947.
Box 12 Folder 4
EDVAC: Report, "A Complete EDVAC Computer System", circa 1947.
Box 12 Folder 5
EDVAC II: Instruction Code C-2, 1947.
Box 12 Folder 6
Electronic Numerical Integrator and Computer(ENIAC): Patent and licensing information and security status, 1946-1947.
Box 12 Folder 7
ENIAC: Press and publicity, 1947.
Box 12 Folder 8
Financial information, 1946.
Box 12 Folder 9
Notes on chronology of computer development, 1947.
Box 12 Folder 10
Patents, correspondence regarding and procedures relating to inventions and patents, 1946-1947.
Box 12 Folder 11
Potential projects and contracts: Aberdeen Proving Grounds, 1947.
Box 12 Folder 12
Potential projects and contracts: Army Air Force Bureau of Standards, 1947 May.
Box 12 Folder 13
Potential projects and contracts: Baird Associates, Inc., 1947.
Box 12 Folder 14
Potential projects and contracts: Correspondence regarding, 1946 April-1947 July.
Box 12 Folder 15
Potential projects and contracts: Electronic Tabulation Equipment, specifications, 1946 April.
Box 12 Folder 16
Potential projects and contracts: Governments, including Australia and the United States (Navy), 1947.
Box 12 Folder 17
Potential projects and contracts: Memos and notes about activities, conversations, and status, 1947.
Box 12 Folder 18
Potential projects and contracts: National Bureau of Standards, 1946.
Box 12 Folder 19
Potential projects and contracts: Northrup Aircraft, 1947 May.
Box 12 Folder 20
Potential projects and contracts: Prudential Insurance Company, 1947 May-November.
Box 12 Folder 21
Potential projects and contracts: Wright Field, 1947 February.
Box 12 Folder 22
Publicity: Brochures and press releases relating to Electronic Control Company and EDVAC, 1946-1947.
Box 12 Folder 23
American Totalisator Company, Inc., agreement and correspondence, 1948-1949.
Box 12 Folder 24
Applications Department, weekly job status sheet, 1950.
Box 12 Folder 25
Binary Automatic Computer (BINAC), notes and suggested changes, 1949.
Box 13 Folder 12
Binary Automatic Computer (BINAC), patent, 1950 August 16.
Box 13 Folder 13
Binary Automatic Computer (BINAC), press and publicity, 1949-1950.
Box 13 Folder 14
Binary Automatic Computer (BINAC), specifications, 1948.
Box 13 Folder 15
Binary Automatic Computer (BINAC), training memos, 1949.
Box 13 Folder 16
Board of Directors, agenda, minutes, and reports; and President's report to the shareholders, 1948-1950.
Box 12 Folder 26
Business plans, 1946.
Box 12 Folder 27
Bylaws, circa 1948.
Box 12 Folder 28
Company histories, 1949.
Box 12 Folder 29
Decimal Adder demonstration, 1948.
Box 13 Folder 17
Eckert-Mauchly Employee's Association and Round Table, 1949.
Box 12 Folder 30
Electronic Discrete Variable Automatic Computer (EDVAC), design report, 1948.
Box 13 Folder 18
Electronic Numerical Integrator and Computer (ENIAC), Potts Medal, press and publicity, 1949.
Box 13 Folder 19
Financial records and memos regarding finances, 1949-1950.
Box 12 Folder 31
Memoranda relating to most aspects of company operation, projects, and personnel, 1948-1950.
Box 12 Folder 32
Office space (1215 Walnut Street), including floor plans, correspondence, and specifications, 1946.
Box 12 Folder 33
Notes and datasheets, 1947-1950.
Box 12 Folder 34
Office files: Date books, 1945-1951.
Box 12 Folder 35
Office files: Date books, 1947-1948.
Box 12 Folder 36
Office files: Date books, 1949-1950.
Box 12 Folder 37
Patents (not all EMCC), 1947-1950.
Box 13 Folder 1
Patents, list of all pending and in-process patents, 1950.
Box 13 Folder 2
Personnel policies, requirements, requirements, salary reviews, and lists of personnel, 1948-1950.
Box 13 Folder 3
"Problems" (mathematical and engineering), 1948-1950.
Box 13 Folder 4
Projects and prospective projects, correspondence and notes regarding, 1947-1951.
Box 13 Folder 5
Remington Rand, agreement, 1950 February 15.
Box 13 Folder 6
Report: "Application of Number Theory Proposed for High Speed Computers", 1949.
Box 13 Folder 7
Report: Production Progress Report, 1949.
Box 13 Folder 8
Reports and papers by EMCC staff (including J. Presper Eckert) , 1947-1952.
Box 13 Folder 9
Service Bureaus, reports, 1949, undated.
Box 13 Folder 10
Tax records, 1947-1950.
Box 13 Folder 11
Uniprinter, report: "A Uniprinter: Five-Ten Pulse Code", 1948.
Box 13 Folder 20
Universal Automatic Computer (UNIVAC), assessment and recommendations, 1950.
Box 13 Folder 21
UNIVAC, instruction codes, 1948-1950.
Box 13 Folder 22
UNIVAC, manual, "An Introduction to the UNIVAC System", 1948-1950.
Box 13 Folder 23
UNIVAC, press and publicity, 1948.
Box 13 Folder 24
UNIVAC, problems and coding, 1948-1950.
Box 13 Folder 25
UNIVAC, Programming for UNIVAC, chapters 1 and 2, circa 1948.
Box 13 Folder 26
UNIVAC, Programming for UNIVAC, chapters 3 and 4, circa 1948.
Box 13 Folder 27
UNIVAC, Report on the UNIVAC, chapters 1-2, 1948 May 17.
Box 13 Folder 28
UNIVAC, training program, 1948.
Box 13 Folder 29
Scope and Contents

The Remington Rand/Sperry Rand records are divided into: i. Company records, ii. Correspondence, iii. Patents, iv. Projects, v. Publicity, vi. Research and "Problems," vii. Research and writing by staff, viii. Research on other computers and computer companies, and ix. Training. This group of records documents a complicated time frame in Mauchly's work history, during which Eckert and Mauchly's positions and roles in the larger company are frequently difficult to ascertain. Of particular interest for researchers should be the information about the UNIVAC Applications Research Center (UARC) which Mauchly headed from 1955 to 1959. His campaign for such an applications research group began much earlier.

i. Company records, lists departments, divisions, and other groups created by Remington Rand/Sperry Rand. For the most part, this group of records houses memos to and from management, departments, and Remington Rand/Sperry Rand colleagues. Some of these documents are on steno disks or on printouts from steno disks. This group provides a glimpse into the complexity of this large company and its departments' working relationships. Of particular interest are the office files, from which researchers can piece together Mauchly's day-to-day activities and most importantly, read his personal and confidential notes (box 14, folder 2), in which his core beliefs about the company, the future and needs of the computer industry and Remington Rand's place in the industry can be found. Similar material will be found in other folders within Subseries C. Researchers should be aware that some personnel records (contained in box 15, folders 1 and 34) are restricted due to personally identifiable information. This group of material also documents the history of the UNIVAC Applications Research Center (UARC), a department which was headed by Mauchly. Almost like a company itself, the UARC appears to have been vitally important to Mauchly; his records of its operation are thorough and extensive.

ii. Correspondence, the second group of materials within Remington Rand/Sperry Rand records is largely professional correspondence, but does not contain intra-company memos (which are housed in the first group of records within this subseries). Correspondence is arranged alphabetically by correspondent (Mauchly's or his secretary's original order was maintained). In general, Mauchly's correspondence is not deep and frequently consists only of one or two letters per correspondent. Researchers will, however, find some prominent scientists among the correspondents.

iii. Patents contains correspondence regarding patent interference, but there are, in fact, several patents for Eckert and Mauchly inventions, including the Electronic Numerical Integrator and Calculator (ENIAC). There are also several guides to protecting inventions, particularly electronic computers, via patents.

iv. Projects, consists of Remington Rand's delivery of services to other organizations, including the U.S. military, retail organizations, churches, publishing companies, telephone companies and universities. One of the most notable projects was "Project 'Election Return'" in which the UNIVAC predicted the outcome of the presidential election in 1952. Materials in this group of records are arranged alphabetically by name of the organization hiring Remington Rand. Similar material will be found in the UNIVAC Application Research Center (UARC) files contained within i. Company records.

v. Publicity contains the extensive press and publicity about Eckert, Mauchly, the ENIAC and the UNIVAC. This group includes brochures published by Remington Rand, information regarding exhibits held at the Franklin Institute, and newspaper and magazine articles about the inventors and their inventions. Of interest is an article about Grace Hopper, an early programmer and inventor of the compiler, who was an employee of Remington Rand and a close colleague of John Mauchly.

vi. Research and "Problems," is a large group of materials in which topics needing investigation were attacked by Mauchly and his colleagues. In this case, and throughout Mauchly's papers, the term "problem" should be interpreted as a mathematical problem, rather than a business concern. Arranged alphabetically by topic, the material includes correspondence, manuals, minutes, notes, instructions, reports, and outside research, all of which appear to have served as the raw materials used by Mauchly and his colleagues to develop coding, programming methodology, routines and subroutines, storage devices, etc. Researchers should pay close attention to the files on programming, which include seminal documents such as "What is Generalized Programming?" Much of this material is closely related to the UNIVAC Applications Research Center (UARC) files. Programs and products related to the UNIVAC System are arranged alphabetically under UNIVAC.

vii. Research and writing by staff is arranged alphabetically by staff member. Mauchly and his colleagues were pioneers in the fields of computer development and programming and wrote prolifically on topics related to their research and discoveries. Some of this writing does not appear to have been intended for publication--in some cases, it may have been meant only for in-house use to communicate progress and new ideas. Mauchly's original arrangement of this material has been maintained as much as possible; researchers may therefore find copies of his colleagues' articles filed in multiple locations within the collection including, almost always, under the topic of the article. Mauchly's own writings are found in Subseries I. Writings by Mauchly.

viii. Research on other computers and computer companies contains brochures, comparisons, notes, and writings about individual companies and specific computers. As the computer industry expanded, Mauchly and his colleagues kept a close eye on competitors' companies and products. This group of material is arranged alphabetically by company name.

ix. Training contains computer training materials compiled by Mauchly for his engineers and other staff, including an extensive training course for EMCC engineers. There are also seminar courses for corporations and organizations using the UNIVAC as well as training courses for programming the UNIVAC.

Accounting and Accounting-Tabulating Department, memos, 1950-1955, 1957.
Box 13 Folder 30
Advanced Programming Division, meeting agenda and proposed organization chart, 1955.
Box 13 Folder 31
Advertising Department, memos and publicity story on utilization of electrical computers, 1953-1957.
Box 13 Folder 32
"APTS" Division, memos and factory and transfer order, 1951-1952.
Box 13 Folder 33
Competitive Design and Competitive Products groups, 1950, 1957-1958.
Box 13 Folder 34
Component Research and Development Department (includes information on amplifiers, arithmetic register header, circuits, clutches, drum head, one word registers, scaling circuits for counters, switches, transistors, and verifiers), 1951-1959.
Box 13 Folder 35
Computer Development Division (probably also called the Electronic Computing Center and Electronic Computer Department), memos, 1954-1958.
Box 13 Folder 36
Control Systems Department, 1956.
Box 13 Folder 37
Electronic Computer Systems Board, minutes, 1957 February 12.
Box 13 Folder 38
Electronic Product Development-Sales Committee, correspondence, minutes, and notes, 1953 March-November.
Box 14 Folder 1
Engineering Department, memos and minutes, 1953-1955.
Box 14 Folder 2
Information Science Division, description and memo, 1956.
Box 14 Folder 3
Intelectron, Inc., considerations on purchasing the company, 1952.
Box 14 Folder 4
International Tabulating Department, memos, 1956.
Box 14 Folder 5
Legal Department, correspondence and memos (largely relating to patents), 1950-1958.
Box 14 Folder 6
Legal Department, correspondence, 1954-1958.
Box 14 Folder 7
Library, memos, purchase requests, and recent acquisitions, 1951-1958.
Box 14 Folder 8
Logical Design Department, memo, 1956.
Box 14 Folder 9
Management Services Department, memos, 1958.
Box 14 Folder 10
Military Division, memos on weather systems, 1958-1959.
Box 14 Folder 11
Office files: Calendars, 1953-1956.
Box 14 Folder 12
Office files: Calendar notes, 1951, 1955, 1957-1958.
Box 14 Folder 13
Office files: Date books, 1951-1952.
Box 14 Folder 14
Office files: Date books, 1953-1954, 1958.
Box 14 Folder 15
Office files: Diaries, 1957 June-1958 January.
Box 14 Folder 16
Office files: File cabinet contents and inventory of office, 1955-1957, undated.
Box 14 Folder 17
Office files: Messages and notes for Mauchly, 1952-1959, undated.
Box 14 Folder 18
Office files: Notes on meetings, projects, and work to be done, 1950-1959.
Box 14 Folder 19
Office files: Notes on meetings, projects, and work to be done, undated.
Box 14 Folder 20
Office files: Office log, 1955 October-1956 April.
Box 14 Folder 21
Office files: Personal and confidential notes by Mauchly, 1950-1958.
Box 14 Folder 22
Office files: Steno disks and printouts of material on (disks 1-39), 1955.
Box 14 Folder 23
Office files: Steno disks and printouts of material on (disks 40-204), 1955-1957.
Box 14 Folder 24
Office files: Trip information and itineraries, 1950-1955.
Box 14 Folder 25
Organization charts and changes in organization, 1955-1958.
Box 14 Folder 26
Patent Department, correspondence with George Elgroth, 1951-1952.
Box 14 Folder 27
Personnel Services Department, memos and policies, 1952-1958.
Box 14 Folder 28
Personnel Services Department: Applications for employment (blank and completed) and resumes (RESTRICTED), 1952-1958.
Box 15 Folder 1
Personnel Services Department: Aptitude tests, 1957-1958.
Box 15 Folder 2
Personnel Services Department: Employee insurance and benefit information, records, and plans, 1951-1958.
Box 15 Folder 3
Personnel Services Department: Employee lists and job descriptions, 1951-1958.
Box 15 Folder 4
Personnel Services Department: Payroll, sick leave, and vacation correspondence, 1951-1959.
Box 15 Folder 5
Personnel Services Department: Travel itineraries, arrangements, etc., 1956-1958.
Box 15 Folder 6
Personnel Services Department: Traveling expense vouchers (completed by Mauchly), 1950, 1952-1955.
Box 15 Folder 7
Personnel Services Department: Traveling expense vouchers (completed by Mauchly), 1956-1959.
Box 15 Folder 8
Plant Engineering Department, memos, 1956-1957.
Box 15 Folder 9
Product Planning Department and Product Design Department, 1956-1958.
Box 15 Folder 10
Program Planning Department, memos, 1956-1957.
Box 15 Folder 11
Programming research, memo, 1955.
Box 15 Folder 12
Public relations and publicity, memos and brochures, 1952-1959.
Box 15 Folder 13
Purchasing, budget, and appropriations: memos, receipts and invoices, 1952-1958.
Box 15 Folder 14
Rem Rand News, 1952-1958.
Box 15 Folder 15
Remington Rand World, 1956, 1957.
Box 15 Folder 16
Research Division, agreement and memos, 1955-1957.
Box 15 Folder 17
Sales and Sales Policy Departments, memos and sales promotion releases, 1951-1958.
Box 15 Folder 18
Sales Bulletin, 1954-1958.
Box 15 Folder 19
Sales Training Bulletin, 1955, 1958.
Box 15 Folder 20
Security: Memos relating to clearance, classified information and presentation and publication of material, 1952-1958.
Box 15 Folder 21
Scientific Studies Department, memo including copy of Mauchly's "Are Computers Newsworthy", 1955.
Box 15 Folder 22
Special Materials, Products, and Sales Departments, memos, 1954, 1957.
Box 15 Folder 23
Stockholders meetings, meeting notices and reports, 1952-1958.
Box 15 Folder 24
Systems and Systems Studies Departments, memos, 1953-1957.
Box 15 Folder 25
Tax Department, memos, 1955-1956, 1958.
Box 15 Folder 26
Technical Information Department, memos and newsletter, 1955-1957.
Box 15 Folder 27
UNIVAC Applications Research Center (UARC): Proposal for and progress report for UARC, drafts, and memos, 1952, 1955-1958.
Box 15 Folder 28
UARC: Budget considerations, estimations, and requests, 1957-1958.
Box 15 Folder 29
UARC: Memos regarding purchases, furniture, and problems with Unityper, 1955.
Box 15 Folder 30
UARC: Monthly status reports, 1957 October-December.
Box 15 Folder 31
UARC: "News Bulletin", 1958 August 28 and September 23.
Box 15 Folder 32
UARC: Notes and comments (Mauchly's), 1954-1955.
Box 15 Folder 33
UARC: Personnel (RESTRICTED), 1955-1959.
Box 15 Folder 34
UARC: Policies and correspondence regarding policies, 1955-1956.
Box 15 Folder 35
UARC: Progress reports, 1957-1958.
Box 15 Folder 36
UARC: Projects, correspondence, description of projects, requests for appropriations, and project planning charts, 1955-1958.
Box 15 Folder 37
UARC: Projects, Applying UNIVAC to Manufacturing Control, progress reports, 1955-1956.
Box 16 Folder 1
UARC: Projects, Office of Naval Research, Contract Nonr-2297, NR 048-116, memos and progress reports, 1957-1958.
Box 16 Folder 2
UARC: Projects, "Project Lightening," proposal, drafts, memos, notes, and seminar program, 1957-1958.
Box 16 Folder 3
UARC: Projects, "Project LOVAM (Linear Operators, Vectors, and Matrices)" memos, proposal, and final report, 1958.
Box 16 Folder 4
UARC: Projects, Weather/Solar projects, memos, progress reports, and working notes, 1957.
Box 16 Folder 5
UARC: Publications, requests for and policies regarding, 1956-1958.
Box 16 Folder 6
UARC: Scientific Applications, memos and progress reports, 1957-1958.
Box 16 Folder 7
UARC: Service Bureaus, applications, projects, and estimating procedures, 1953-1955.
Box 16 Folder 8
UARC: Song and weather report for Dr. Mauchly's birthday, 1957 August 30.
Box 16 Folder 9
UARC: Staff correspondence regarding attending conferences , 1955-1958.
Box 16 Folder 10
UARC: Staff correspondence regarding requests for information or publications, 1955-1958.
Box 16 Folder 11
UARC: Tapes, catalogues, memos and reports, 1955.
Box 16 Folder 12
UARC: Trip reports, 1955-1958.
Box 16 Folder 13
UARC: Technical reports (numbers 1-5, 7-8, and 12), 1957.
Box 16 Folder 14
UARC: Technical reports (numbers 17 and 18), 1957.
Box 16 Folder 15
UARC: Testimonial letters ("fan mail"), 1955-1958.
Box 16 Folder 16
UARC: Weekly Bulletins, 1957-1958.
Box 16 Folder 17
UARC: Weekly Seminar, announcements, 1955, 1957-1958.
Box 16 Folder 18
UARC: Work orders, 1956-1958.
Box 16 Folder 19
UARC: Working notes, "Duration of Play," "Factoral Radix Notation and the Problem of Random Permutations," "Fermat Problems," "Fixed Charge Problem," and "Floating Decimal", 1957-1958.
Box 16 Folder 20
UARC: Working notes, "Genealogical Problem," "Generalized Programming for UNIVAC [I and II]," and "Generation and Testing of Pseudo-Random Numbers," , 1957-1958.
Box 16 Folder 21
UARC: Working notes, "Information Retrieval," "LARC (Livermore Automatic Research Computer)," and "Linear Programming and Game Theory" , 1955-1957.
Box 16 Folder 22
UARC: Working notes, "Minimal Trees, Chains, and Tours," and "Numerical Analysis" , 1957.
Box 16 Folder 23
UARC: Working notes, "Operations Research," Parametric Programming and the Primal-Dual Algorithm," and "Processing the Current List of Medical Literature by Computer: Discussion of the Stages by which the Processing would be Accomplished", 1956-1958.
Box 16 Folder 24
UARC: Working notes, "School Bus Problem," "Simplex Method with Rounded Variables," and "Topics needing Investigation in the Field of Logical Instructions, Information Theory, and Coding Techniques", 1955, 1957.
Box 16 Folder 25
UARC: Working notes, "Traveling Salesman Problem", 1956-1958.
Box 16 Folder 26-28
UARC: Working notes, "Use of Orthogonal Variables in Correlation Analysis", 1957.
Box 16 Folder 29
Universal Automatic Computer (UNIVAC) Division, memos, 1951-1958.
Box 16 Folder 30
UNIVAC Management Services and Operations Research Reports, 1957-1958.
Box 16 Folder 31
UNIVAC Product Development Committee, agendas, memos, and minutes, 1950-1953.
Box 16 Folder 32
UNIVAC Sales Department, memos, 1952-1959.
Box 16 Folder 33
UNIVAC users, lists and publicity, 1954-1958.
Box 16 Folder 34
UNIVAC User's Conference, memos and questionnaires, 1958.
Box 16 Folder 35
UNIVAC User Relations Department, memos, requisition form, and system routines, 1958.
Box 16 Folder 36
Abbott-Avakian (correspondents include R.R. Abbot, Burton W. Adkinson, Mary H. Ahearn, S.B. Akin, William L. Alden, J. Hamilton Allen, William M. Allen, Franz L. Alt, Theo G. Alteneder, Paul Arthur, Jr., and Amik A. Avakian), 1949-1958.
Box 17 Folder 1
Bakst-Barrows (correspondents include Aaron Bakst, Theodore Balieff, Charles E. Balleisen, Samuel Bardy, R. Bowling Barnes, and Zike Barrows , 1949-1958.
Box 17 Folder 2
Bedford-Bitner (correspondents include Gwendolyn M. Bedford, William B. Bell, J. Belzer, R.W. Bemer, Kurt Benjamin, Donn Bennett, Bennington College, Bernard S. Benson, Frederic R. Benson, Edmund C. Berkeley, Charles L. Bernier, Sidney N. Berry, Joseph A. Berti, P.L. Betz, Dr. Reinhard H. Beutner, K. Beyerle, Dr. Ludwig Biermann, Bruce H. Billings, Cecil H. Birnkrant, and R. Frank Bitner).
Box 17 Folder 3
Boehm-Butler (correspondents include George A.W. Boehm, E.W. Boehne, Lea M. Bohnert, Harry L. Bondy, C.P. Bourne, Glen Bowersox, Albert H. Bowker, Jacques Boyer, Frederick S. Brackett, James M. Brady, J.G. Brainerd, Martha C. Brice, Glenn W. Brier, British Information Services, Martha G. Bullard, McGeorge Bundy, Arthur W. Burks, Richard S. Burington, John S. Burlew, Frank E. Burton, Dr. Vannevar Bush, W.E. Bushor, and Sue Butler), 1950-1959.
Box 17 Folder 4
Campbell-Chu (correspondents include Charles I. Campbell, John J. Carpenter, John W. Carr, III, Edith M. Cary, W.B. Chadwick, Carl C. Chambers, W.P. Champlain, Ned Chapin, J.D. Chapline, Charles Chapple, and J.C. Chu), 1949-1958.
Box 17 Folder 5
Clark-Crutcher (correspondents include Louis P. Clark, R.F. Clippinger, Harold W. Cobb, J. Frank Coneybear, Marie E. Conklin, John D. Cooney, Council on Library Resources, Inc., Dr. Stephen H. Crandall, Lyndon Crawford, John J. Criscitiello, and Harold L. Crutcher), 1950-1957.
Box 17 Folder 6
Dale-Dykman (correspondents include James T. Dale, Dr. Joseph F. Daly, R.W. Davenport, Norman Davids, James G. Davis, Watson Davis, E.G. Davy, Charles F. De Mey, M. Richard Denison, William Dey, F.L. Dobbins, Geoffrey Dolman, Alice Dondero, Harold F. Dorn, R.C. Douthitt, B.E. Downs, J.H. Drillick, and Milton Dykman), 1950-1959.
Box 17 Folder 7
Eberly-Ezekiel (correspondents include John Eberly, J. Presper Eckert, Robert D. Eckhouse, Paul Dawson Eddy, Curt W. Eisenberg, Dr. Churchill Eisenhart, Dr. Stig Ekelof, Jackson P. English, Dr. Paul L. Erdos, S.H. Ericson, W.L. Eskridge, and Mordecai Ezekiel), 1950-1959.
Box 17 Folder 8
Finelli-Furth (correspondents include John J. Finelli, Ed Fitzgerald, Nellie H. Fogleman, George S. Forde, Dr. Jay W. Forrester, Kenneth A. Foster, Dr. Stanley P. Frankel, T.F. Frawley, Sid Freeman, Raymond A. Frigon, Richard A. Fritz, Dr. Fry, and Albert L. Furth), 1950-1959.
Box 17 Folder 9
Gallup-Gruenberg (correspondents include F.H. Gallup, Esther B. Garber, Eugene Garfield, E.E. Garrett, Carl L Gerberich, Dr. Gimpl, Harry E. Goheen, Roy Goldfinger, John Goldston, L. Gombos, Robert M. Goodman, Saul Gorn, Milton D. Graham, John C. Green, Robert E. Greenwood, H.R.J. Grosch, General L.R. Groves, and Elliot Gruenberg), 1949-1958.
Box 17 Folder 10
Hackenyos-Hayashi (correspondents include C.W. Hackenyos, Paul M. Hahn, Frank L. Haley, Lloyd L. Hanes, E.L. Harder, Dr. Howard C. Hardy, Luther Harr, Susan B. Harley, Ernest Hartford, Douglas R. Hartree, Bevier Hasbrouck, Charles E. Hastings, Cecil Hastings, Jr., and Teru "Tay" Hayashi), 1950-1958.
Box 17 Folder 11
Heller-Hyslop (correspondents include John H. Heller, Marika Hellstrom, John Power Hely, IV, Ken [Heoman], Dr. Paul Herget, Betty Holberton, John Holberton, Leith Holloway, Ralph Hopkins, Edward Hopkinson, Jr., Donald B. Houghton, E.L. Howard, John H. Hughes, Edward O. Hulbert, Donald F. Hunt, Dr. Harry D. Huskey, and Marjorie R. Hyslop), 1951-1958.
Box 17 Folder 12
Iliff-Jupp (correspondents include J.W. Iluff, Marjorie Jack, Joseph Gray Jackson, Robert F. Jackson, William F. Jackson, L. Jacobs, Arvid W. Jacobson, Norman Jacobson, H.L. Johnson, C.E. Johnson, Reynold B. Johnson, Robert L. Johnson, James P. Junkin, and K. Elizabeth Jupp), 1949-1958.
Box 17 Folder 13
Kaempffert-Kullbach (correspondents include Waldemar Kaempffert, Albert R. Kall, Arthur Katz, Everett Kimball, Jr., G.F. Kinmonth, B.W. Knollenberg, Richard K. Koegler, Calvin J. Kirchen, Tjalling Koopsman, Harold [Korkes], Irving P. Krick, Major C.D. Kuhn, and S. Kullback), 1949-1958.
Box 17 Folder 14
Lamperti-Luke (correspondents include John W. Lamperti, Carl T. Leander, Frank Leary, Ben Leeper, Howard Levene, Library of Congress, John T. Lichtfield, Jr., Mrs. Link, Arthur D. Little, Inc., Joyce Logan, William N. Loucks, Robert T. Luginbuhl, and Yudell L. Luke), 1951-1957.
Box 17 Folder 15
MacDougal-Myers (correspondents include R.E. MacDougall, John W. Mack, Donald M. MacKay, Don Macoy, Lillian Madow, Richard H. Magaziner, F.J. Maginniss, Joseph Mahler, Lorraine M. Maier, Saburo Makinouchi, Clifford J. Maloney, Martin Mann, Dr. Alan S. Manne, A.F. Martin, Carl N. Martin, Jr., Marjory L. Martin, Martin Matheson, Adolph Matz, G.O. Mauchle, E.C. Mauchly, J.P. Mayberry, Joan M. McCarte, E.A. McCormick, James McGarvey, J.P. McMorrow, Dr. J.C. McPherson, Milton H. Medenbach, Stanley Metalitz, Nicholas Metropolis, Herbert A. Meyer, June Meyer, Barry Miller, J.L. Miller, Herbert Mitchell, Monroe Calculating Machine Company, Inc., T. Ewing Montgomery, Moore and Hall (regarding Sperry Rand v. Bell Labs), Frederick Mosteller, M.C. Mulcahy, Thomas Mulhern, Albert G. Mumma, Converse Murdoch, Dewitt O. Myatt, Edna F. Myers, and Mandas Myers) , 1949-1958.
Box 17 Folder 16
Namias-Nyquist (correspondents include Jerome Namias, National Applied Mathematics Laboratory, Reginald B. Naugle, Allen Newell, A.C. Nielson, Waldo J. Nielson, Edith Norris, North Carolina State College, John DeWitt Norton, and H. Nyquist), 1949-1958.
Box 17 Folder 17
Oakley-Pullen (correspondents include Gladney Oakley, C.O. Oakley, Dr. Charles W. Oliphant, R.L. Olsen, William O. Olsen, Ascher Opler, Alex Orden, Orga-Ratio, Elizabeth R. Orr, Morris Ostrofsky, Clarence E. Palmer, J.L.H. Paulhus, E.S. Pearson, Roy V. Peel, Harold Pender, Alan J. Perlis, J.W. Perry, John Pfeffer, Charles Phillips, John Phillips, Robert Dunn Phillips, Dr. E.R. Piore, J.W. Pontius, Lynne Poole, Pauline Poster, Virginia S. Powell, and Keats A. Pullen), 1950-1958.
Box 17 Folder 18
Rahill-Ryder (correspondents include William Allen Rahill, Henry Rahmel, James H. Rand, Marcel N. Rand, J.A. Ratcliffe, R.E. Rawlins, Ida Rhodes, Walter P., Rhodes, Donald Rich, Dr. Walter Orr Roberts, Russell G. Rogers, R.A. Roggenbuck, A.M. Ross, C.D. Ross, Dan C. Ross, Floyd H. Rowland, D.M. Rubel, Dr. Morris Rubinoff, Paul E. Ruch, George H. Rule, Dr. H. Rutishauser, Joanne M. Ryan, F.C. Ryder, and J.D. Ryder, 1949-1957.
Box 17 Folder 19
Salati-Suckle (correspondents include O.M. Salati, William Schmidt, Claire Schultz, Beverly R. Scott, Warren Semon, Roberta Shaw, Seymour Sherman, Walter F. Shenton, Julius Shiskin, Dorothy Shisler, George W. Shoemaker, R. Siberg, Arthur I. Siegel, Shirleigh Silverman, Herbert A. Simon, Omar I. Sinclair, S.F. Singer, Charles V.L. Smith, Danny Sloan, Theodore B. Smith, R.L. Snyder, Thomas H. Southard, John W. Sparkman, Robert J. Stahl, Leonard Starr, V.A. Stenberg, Mary E. Stevens, James Steward, John Q. Steward, Gunther Stieneke, W.W. Stifler, Jr., Charles B. Stoll, Walker G. Stone, H.L. Strauss, Lewis L. Strauss, Oliver H. Straus, John W. Streeter, Laurance Stuntz, and William V. Suckle), 1949-1958.
Box 17 Folder 20
Taube-Tukey (correspondents include Mortimer Taube, Lazare Teper, Graydon A. Thayer, Herbert Thom, Dr. Andrew Thomson, Harald H. Thormahlen, Raymond Toledo, C.B. Tompkins, Howard E. Tompkins, Dr. Leonard Tornheim, Mark A. Townsend, and John W. Tukey, 1950-1958.
Box 17 Folder 21
Ubell-Votaw (correspondents include Earl Ubell, Dr. Steven G. Vandenberg, Marjorie Van de Water, E.H. Vestine, Harry F. Vickers, G.I. Vincent, and D.F. Votaw, Jr.), 1949-1958.
Box 17 Folder 22
Weathercasts of America-Wexler (correspondents include Weathercasts of America, Tommy Weber, Nicholas H. Wenger, Peter Wegner, Fred Weiland, William Turanski, Dr. Alexander Weinstein, Barbara H. Weiss, Walter R. Welch, Henry S. Wells, Jr., and Harry Wexler), 1949-1958.
Box 17 Folder 23
White-Wyatt (correspondents include Robert M. White, D.D. Whyte, H.R. Wickenden, Warren Wightman, Dr. Maurice V. Wilkes, S.S. Wilks, Alfred H. Williams, Fred C. Williams, W.P. Williams, Hurd C. Willet, G.H. Willits, William Mintzer Wills, Louis D. Wilson, V.M. Wolontis, S.Y. Wong, Dr. Max Woodbury, John E. Woolston, Robert Worthing, Theon Wright, Dewitt O. Wyatt, 1949-1958.
Box 17 Folder 24
Young-Zemlin (correspondents include David M. Young, Jr., Marshall C. Yovits, Robert Y. Zachary, Harry C. Zeisig, Jr., and R.A. Zemlin), 1953-1958.
Box 17 Folder 25
Unidentified authors or recipients, 1949-1959.
Box 17 Folder 26
Unidentified authors or recipients, incomplete, 1953-1958.
Box 17 Folder 27
Letters neither to nor from Mauchly [includes intervention letter from Edmund Berkeley to Grace Hopper (copied to John Mauchly)], 1952-1959.
Box 17 Folder 28
Letters regarding Electronic Control Company annual royalty obligation, 1952-1955.
Box 17 Folder 29
Letters requesting publication (many of which relate to weather publications), 1946-1958.
Box 17 Folder 30-31
Basic patent protection on electronic computers, correspondence, memos, and notes, 1954-1955.
Box 17 Folder 33
Eckert-Mauchly patents, 1954.
Box 18 Folder 1
Electronic Numerical Integrator and Calculator (ENIAC), 1951, 1954.
Box 17 Folder 34
ENIAC, patent interference, correspondence and documents relating to, 1954.
Box 18 Folder 2
Non-Eckert-Mauchly patents, 1954.
Box 18 Folder 3
Patents and patent interference, correspondence and documents relating to, 1955-1956.
Box 18 Folder 5-6
Printed guides and documents regarding patents, 1954-1957.
Box 18 Folder 4
Report on trip to Patent Office, 1957 July 23.
Box 18 Folder 7
Correspondence relating to possible contracts, 1951-1958.
Box 18 Folder 8
Air Force computers, memos, 1955-1956.
Box 18 Folder 9
Associated Merchandising Corporation, memos, reports, and requirements, 1952-1953.
Box 18 Folder 10
Bureau of Census, correspondence, instructions, memos, minutes, research material, and reports, 1946-1956.
Box 18 Folder 11-12
Church of Latter Day Saints (Mormon), genealogical research problem, memo, notes, and suggestions, 1957.
Box 18 Folder 13
Curtis Publishing Company, data, memo, and notes, 1954.
Box 18 Folder 14
Du Pont, memos, proposal "A Plan for Electronic Digital Equipment for E.I. du Pont de Nemours & Company," and reports, 1956-1958.
Box 18 Folder 15
First National Bank, Chicago, Illinois, memo and report on punch card check service, 1952.
Box 18 Folder 16