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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
Horace G. Richards Papers
Collection
Identifier: ANSP-Coll-0976
Overview
Horace G. Richards (1906-1984) was a geologist at the Academy of Natural Sciences, Philadelphia and an authority on the geologic formations of the Atlantic coastal plain. His research specialty focused on geology and paleontology of the Quaternary Period (approximately the past 1.8 million years), but his research interests also included Cenozoic mollusca, and marine Pleistocene geology and paleontology of the Atlantic coastal plain. Additionally, he studied climate change and coastal...
Dates:
1928-1984
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- Articles 1
- Atlantic Coastal Plain Project 1
- 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
- Cape May (N.J.) 1
- Coastal plains 1
- Correspondence 1
- Crustaceans 1
- Dredging 1
- Financial records 1
- Geology 1
- Hummingbirds 1
- Interviews 1
- Lectures 1
- Manuscripts 1
- Mollusks 1
- Negatives (photographic) 1
- Oil wells 1
- Ornithology 1
- Ornithology -- Methodology 1
- Ornithology -- Research 1
- Paleontology 1
- Photograph albums 1
- Photography 1
- Photography, High-speed 1
- Radio scripts 1
- Reports 1
- Scrapbooks 1
- Sketches 1
- Stereoscopic photographs 1 ∧ less
- Names
- American Association of Petroleum Geologists 1
- American Geological Institute 1
- Atlantic Coastal Plain Geological Association 1
- E.I. du Pont de Nemours & Company 1
- Geological Society of America 1
- Geological Society of New Jersey 1
- Greenewalt, Crawford H., 1902-1993 1
- International Union for Quaternary Research 1
- Massachusetts Institute of Technology 1
- Morton, Samuel George, 1799-1851 1
- Philadelphia Geological Society 1
- Shorelines Commission of INQUA 1
- Sun Oil Company 1
- United States. Bureau of Fisheries 1
- United States. Office of Naval Research. Geography Branch 1
- University of Pennsylvania 1
- Visual Resources for Ornithology (Organization) 1 ∧ less
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