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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
Constantine Hering and Calvin B. Knerr family papers
Collection
Identifier: HU-100
Overview
Dr. Constantine Hering (1800-1880), born and educated in Germany, immigrated to Philadelphia in 1833 and devoted his life to the study, practice and education of homeopathic medicine in the United States. As such, he is considered the father of homeopathy in America. Hering founded several schools and organizations devoted to teaching homeopathy, especially the North American Academy of the Homeopathic Healing Arts, aka the Allentown Academy, in 1836, and the Hahnemann Medical College of...
Dates:
1820 - 2003; Majority of material found within 1820 - 1940
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- Academy of Natural Sciences of Drexel University 2
- Drexel University: College of Medicine Legacy Center 1
- Subject
- Manuscripts 2
- Slides (photographs) 2
- Allentown (Pa.) 1
- Audiovisual materials 1
- Autobiographies 1
- Awards 1
- Biographies 1
- Birds 1
- Birds -- Flight 1
- Birds -- Songs and music 1
- Black-and-white photographs 1
- Black-and-white slides 1
- Clippings 1
- Correspondence 1
- Diaries 1
- Education 1
- Family papers 1
- Field notes 1
- Genealogical tables 1
- Germany 1
- Homeopathy 1
- Homeopathy--Pennsylvania--Philadelphia 1
- Hummingbirds 1
- Illustration 1
- Lectures 1
- Medical colleges 1
- Medical colleges -- Pennsylvania -- Philadelphia 1
- Medical education 1
- Medicine 1
- Medicine -- History 1
- Negatives (photographic) 1
- Notebooks 1
- Obituaries 1
- Ornithology 1
- Ornithology -- Methodology 1
- Ornithology -- Research 1
- Philadelphia (Pa.) 1
- Photograph albums 1
- Photography 1
- Photography, High-speed 1
- Physicians 1
- Publications 1
- Research notes 1
- Scrapbooks 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
- Hahnemann Medical College and Hospital of Philadelphia 1
- Hahnemann, Samuel 1
- Hering, Constantine (1800-1880) 1
- Knerr, Calvin B., M.D. (Calvin Brobst), 1847-1940 1
- Massachusetts Institute of Technology 1
- North American Academy of the Homeopathic Healing Art 1
- Paracelsus, 1493-1541 1
- Smith, Edmund Stanley ("Ned") (Edmund Stanley ("Ned") Smith) (1919-1985) 1
- Visual Resources for Ornithology (Organization) 1 ∧ less
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