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Crawford H. Greenewalt papers
Collection — Multiple Containers
Identifier: ANSP-Coll-0997
Overview
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...
Dates:
1951 - 1993
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- Subject
- Audiovisual materials 1
- Awards 1
- Birds 1
- Birds -- Flight 1
- Birds -- Songs and music 1
- Black-and-white photographs 1
- Black-and-white slides 1
- Clippings 1
- Field notes 1
- Hummingbirds 1
- Illustration 1
- Manuscripts 1
- Negatives (photographic) 1
- Ornithology 1
- Ornithology -- Methodology 1
- Ornithology -- Research 1
- Photography 1
- Photography, High-speed 1
- Research notes 1
- Stereoscopic photographs 1 ∧ less
- Names
- Academy of Natural Sciences of Philadelphia 1
- E.I. du Pont de Nemours & Company 1
- Greenewalt, Crawford H., 1902-1993 1
- Massachusetts Institute of Technology 1
- Smith, Edmund Stanley ("Ned") (Edmund Stanley ("Ned") Smith) (1919-1985) 1
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