Philadelphia Area Center
for History of Science

431 Chestnut Street
Philadelphia, PA 19106-2426

Babak Ashrafi, Ph.D.
Executive Director
(267) 386-3487

Philip Honenberger, Ph.D.
Adjunct Fellow, Program Coordinator
(267) 386-3489

Sheila O’Shaughnessy
Director of Development and Communication
(215) 558-6188

Aaron Slater
Office Manager
(267) 386-3475

Contact PACHS

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Josiah Clark Nott (1804–1873). Types of Mankind...., 1854. From the exhibit Dialogues with Darwin. Image courtesy of the American Philosophical Society.

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