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ENIAC Patent Trial Collection, 1864-1973 (inclusive) 1938-1971 (bulk)

Extent:
95 cubic feet
Abstract:
While trying to secure the patent for the ENIAC, serious problems for the patent rights of John Presper Eckert, Jr. and John William Mauchly arose in the 1960's. The ENIAC Papers are divided into two major series, viz., one, Sperry Rand Corporation, John P. Eckert, Jr., and John W. Mauchly vs. Bell Telephone, Incorporated; and two, Honeywell, Incorporated vs. Sperry Rand Corporation and Illinois Scientific Developments, Incorporated.

Held at: University of Pennsylvania: University Archives and Records Center [Contact Us]

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Mary Elizabeth Hallock Greenewalt papers, 1879-1950 (bulk) 1769-1950, undated (inclusive)

Extent:
18.2 linear feet (39 boxes, 29 volumes, 23 flat files)
Abstract:
Mary Elizabeth Hallock’s arrival in Philadelphia in 1882 at the age of eleven set into motion a forty-year career as a musician, inventor, lecturer, writer and political activist. Born in Beirut, September 8, 1871 to Sara (Tabet) Hallock, descendant of an aristocratic Syrian family, and Samuel Hallock, a U.S. consul, she was educated in Beirut and Philadelphia. A gifted musician, Hallock graduated from Philadelphia’s Musical Academy in 1893, and in 1897 studied piano in Vienna with Theodore Leschetizky. In 1898 in Johnstown, New York, Hallock married Dr. Frank L. Greenewalt, thirty-two years old and a physician-in-chief at Girard College. The Greenewalts had one son, Crawford, born in 1902. Greenewalt, a pianist noted for her interpretation of Chopin, began in the early 1900s to investigate how gradated colored lighting might enhance the emotional expression of music. By 1920 Greenewalt had obtained the first of many patents covering a color organ designed to project a sequence of...(see more)

Held at: Historical Society of Pennsylvania [Contact Us]