Theodore Roosevelt
Nature & History Association


Supporting North Dakota's National Parks since 1951!

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Our Mission
Theodore Roosevelt Nature and History Association (TRNHA), a nonprofit organization, exists to assist and support Theodore Roosevelt National Park, Knife River Indian Villages National Historic Site, and Upper Souris National Wildlife Refuge.  Proceeds from our retail operations, memberships, and donations support the educational, interpretive, and scientific research programs to enhance the experience of park visitors.



What is a Cooperating Association
Cooperating associations developed in National Park Service history in response to visitor needs for guides, leaflets, pictures, maps, and other interpretive literature not available through the use of federal funds. Today there are more than 60 associations serving over 400 public land units of the National Park Service, Bureau of Land Management, U.S. Forest Service, and U.S. Fish and Wildlife. 
Submit your photos to our 2016 Picture Yourself in Theodore Roosevelt National Park Photo Contest.

Click here to learn more!

Event Calendar
June 5, 2016
62nd Annual TRNHA Birdwalk in Cottonwood Campground
June 9, 2016
John Bluemle Geology lecture in the South Unit - 7 pm MT

June 18, 2016
Picnic in the park with North Dakota Badlands Horse group
June 24-25, 2016
DSU Bioblitz in TRNP

July 10, 2016
Art in the Park and Teddy Bear Picnic in the South Unit
Store Hours
Theodore Roosevelt NP
South Unit - 8-4:30 MT
Painted Canyon - 8:30 - 4:30 MT
North Unit - 9-5 CT Fri to Mon
Knife River Indian Villages NHS
8-4:30 CT
Upper Souris NWF
Mon-Fri 8-4:30 CT