History of Science:
Philadelphia Area Center for History of Science
Chemical Heritage Foundation
Natural Sciences and Horticulture and Botany:
Academy of Natural Sciences
The Wagner Free Institute of Science
Winterthur Museum, Garden and Library
Pennsylvania Horticulture Society
Biology and Medicine:
College of Physicians of Philadelphia
American Philosophical Society
Drexel University College of Medicine Archives
Have a Question?
We are happy to help assist you with your research.
Special Collections is open Monday - Friday, 9:00 a.m. to 5:00 p.m. and Tuesday, 9:00 a.m. to 8:00 p.m. Before visiting, please read the policies & procedures page and the visitor information page.
Also, for more information please see Frequently Asked Questions.