E.I. du Pont de Nemours & Company
Organization
Found in 2 Collections and/or Records:
Academy of Natural Sciences of Philadelphia, Division of Environmental Research Records
Collection — Multiple Containers
Identifier: ANSP-Coll-0999
Overview
The Division of Environmental Research (DER) was established as a department of the Academy of Natural Sciences in 1947 by botanist and limnologist, Dr. Ruth Patrick. Originally called the Department of Limnology, the department was envisioned by Patrick as a multidisciplinary team of scientists devoted to helping protect the quality of the environment. Not only was environmental research a novel idea for the time, but the multidisciplinary nature of the research was also innovative. The...
Dates:
1952 - 1995
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
Additional filters:
- Subject
- Administrative records 1
- Annual reports 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
- Chalk Point Generating Station (Md) 1
- Correspondence 1
- Data 1
- Diatoms 1
- Ecology 1
- Estuarine ecology 1
- Field notes 1
- Financial records 1
- Hummingbirds 1
- Limnology 1
- Manuals (Instructional materials) 1
- Manuscripts 1
- Minutes 1
- Natural history museums 1
- Negatives (photographic) 1
- Ornithology 1
- Ornithology -- Methodology 1
- Ornithology -- Research 1
- Personnel records 1
- Photographs 1
- Photography 1
- Photography, High-speed 1
- Pollution 1
- Project files 1
- Publications 1
- Reports 1
- Research notes 1
- Sketches 1
- Slides (photographs) 1
- Stereoscopic photographs 1 ∧ less
∨ more