Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!

Since its founding in 1988, the Othmer Library at the Science History Institute has been a haven for research in the history of science—but there’s more to the story. Explore the reading room on a guided tour, learn how our collection has grown, and discover why we have one of the most comprehensive rare book collections on chemistry and its alchemical roots.


Othmer Library Tours are available every other Wednesday and on the first Friday of most months.

Registration is required for Wednesday tours; First Friday tours are drop-in. Guests under 14 years of age must be accompanied by an adult.

More events

March 14, 2026
For Families

Stories of Science: Celebrating Women’s History

Join us in our museum EVERY SATURDAY for a family-friendly program that highlights strange and surprising stories from the history of science!

Book cover of The Maternal Imprint showing a pattern of colorful thumbprints
March 19, 2026
Programs, Lectures & Talks

The Maternal Imprint

This Women’s History Month, join us for a thought-provoking presentation by leading gender and science scholar Sarah S. Richardson.

dark blue graphic showing 52 Weeks of Firsts along with various mementos
March 21, 2026
For Families

Stories of Science: 52 Weeks of Firsts

Join us as we celebrate the invention of the first paper match folder in 1892—the precursor to the modern matchbook—as part of the Philadelphia Historic District’s 52 Weeks of Firsts.

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