Museum opening hours: Wednesdays 1 pm to 4 pm & Saturdays 10 am to 2 pm Special tours or research hours can be provided by calling 719-559-0837

Physical Address:

66 Lower Glenway

Palmer Lake, CO 80133

Mailing address:

PO Box 662

Palmer Lake, CO 80133

The Long Expedition

Welcome back! PLHS events for Summer and Fall 2021 have been tentatively scheduled. Updates are coming soon.


PLHS hosts monthly historical talks and field trips on a variety of topics.  They are usually held on the third Thursday of the month at the Palmer Lake Town Hall at 42 Valley Crescent St.  Click here for directions.  To submit an idea for an event, email


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The Long Expedition

October 21 @ 7:00 pm - 8:30 pm

Just over 200 years ago, Major Stephen Long’s U.S. expedition came through the Palmer Divide area. Long and nineteen other men traveled by boat, horseback, and foot from 1819-1820 to explore the Platte River and its sources. The team included soldiers, artists, and botanists and they were among the first Europeans in the area. They named Castle Rock and “discovered” the columbine flower. Presented John Stansfield.


October 21
7:00 pm - 8:30 pm


Tri-Lakes Chamber of Commerce
166 Second Street
Monument, CO 80132 United States
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