The Donald F. and Mildred Topp Othmer Library of Chemical History

The Othmer Library of Chemical History encompasses the history of chemistry and related sciences and industries. Strengths include alchemy, industries, general science, physics, physiology, medicine, toxicology, pathology, pharmacology, pharmacy and materia medica, technology, engineering, environmental topics, mining, and chemical manufacturers.

Sensing Change

See your environment with fresh eyes through this online exhibit.

Need Meeting Space?

CHF’s state-of-the-art conference center is in Philadelphia’s beautiful historic district.


Fellowships at CHF

CHF’s scholars, who spend anywhere from one to nine months in residence, form a vital part of CHF’s intellectual life.

Ship of Fellows

CHF’s fellowship program attracts researchers from all over the world. Read about their work and time in Philadelphia on the Periodic Tabloid.