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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
John J. Nesbitt, Inc. and family records
Collection
Identifier: MC-00-063
Abstract
Albert J. Nesbitt was the first child of John J. Nesbitt, the founder of John J. Nesbitt, Inc., which manufactured heating and ventilating units for schools in the early twentieth century. In 1941, Albert became the president of the company after his father's death. The company continued producing heating and cooling elements for schools. During World War II, the company devoted their facilities to produce munitions for the Philadelphia Ordinance District for which they were awarded four...
Dates:
1910s-1970s
Found in:
Drexel University Archives
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- Repository
- Academy of Natural Sciences of Drexel University 1
- Drexel University Archives 1
- Subject
- Annual reports 1
- Audiovisual materials 1
- Birds 1
- Birds -- Flight 1
- Birds -- Songs and music 1
- Black-and-white photographs 1
- Black-and-white photographs. 1
- Black-and-white slides 1
- College trustees 1
- Color photographs 1
- Drexel Institute of Technology -- History 1
- Drexel University -- History 1
- Heating and ventilation industry 1
- Hummingbirds 1
- Manuscripts 1
- Negatives (photographic) 1
- Ornithology 1
- Ornithology -- Methodology 1
- Ornithology -- Research 1
- Photographs 1
- Photography 1
- Photography, High-speed 1
- Publications 1
- Research notes 1
- School buildings -- Heating and ventilation. 1
- Sketches 1
- Slides (photographs) 1
- Stereoscopic photographs 1 ∧ less
- Names
- Academy of Natural Sciences of Philadelphia 1
- Drexel University. Nesbitt College of Design Arts 1
- E.I. du Pont de Nemours & Company 1
- George Moll Advertising Agency (Philadelphia, Pa.) 1
- Greenewalt, Crawford H., 1902-1993 1
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