The APS is closed on Monday, January 20 in observance of Martin Luther King, Jr. Day. 

APS Holiday Hours

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The American Philosophical Society offices and library will be closed Saturday December 23 through Monday January 1, 2018. The Society will re-open for normal business hours on January 2, 2018.

The exhibition Curious Revolutionaries: The Peales of Philadelphia will be open 10:00 a.m. - 4:00 p.m. at the APS Museum (104 South Fifth Street) on:

- Thursday, December 21 - Saturday, December 23 

- Thursday, December 28 - Saturday, December 30 

Saturday, December 30 will be the last day to view the current exhibition.