Plan A Visit to GEM

2018 Winter Season Hours:

The GEM Store, Oldman Research Library and the Main Gallery (Doc Culleton Building) is open most weekdays: 10am – 4pm

Please call before you visit to make sure we are open!

2018 Summer Season; opens on Friday, May 25th.

The Research Library is available to the public and upon request! Please call to schedule a research time: 307.327.5308


Questions?  Call 307.327.5308 or email

Our Mission
Grand Encampment Museum preserves and interprets the history of the Upper North Platte Valley. It provides the public with access to historical sources and experiences, as well as a place for research and to educate all generations.