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Crawford H. Greenewalt papers, 1951-1993 (inclusive)

Extent:
23.6 linear feet (40 containers)
Abstract:
Crawford Hallock Greenewalt (1902-1993) was a chemical engineer and the President of the DuPont Company from 1948 to 1962. He had a passion for the natural sciences, and combined his love of ornithology with photography. He was especially known for his high speed photographs of hummingbirds. His ornithological interests included bird songs, the radiance of hummingbird feathers and the evolution of shapes and sizes of birds in relation to their flight abilities. The Crawford H. Greenewalt papers document Greenewalt's personal study of ornithology, primarily his work on hummingbirds. The collection dates from 1951 to 1993 and consists primarily of photographs taken by Greenewalt, and technical data collected by Greenewalt. The images photographed by Greenewalt exist in many different formats throughout the collection, including prints, negatives, and slides. The technical data in this collection represents Greenewalt's research into the physiology of hummingbirds, and the development...(see more)

Held at: Academy of Natural Sciences, Philadelphia [Contact Us]

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Edward Drinker Cope papers, 1859-1907 (inclusive)

Extent:
15.0 linear inches
Abstract:
Edward Drinker Cope (1840-1897) was one of the most distinguished American scientists of the 19th century. The bulk of his work was in the fields of paleontology, zoology, geology and anatomy. During his lifetime, he discovered and described over 600 new species and contributed over 1300 papers to scientific literature. The collection contains certificates and honors, medals, manuscripts of scientific papers, drawings, scientific photographs, biographical material, news clippings, account books, and miscellaneous notes.

Held at: Academy of Natural Sciences, Philadelphia [Contact Us]