Theodore Roosevelt Nature & History Association


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.


TRNHA partners with the National Park Service in operating visitor centers by providing visitor service clerks. We also assist with the costs of student internships, volunteer programs, and other conservation opportunities.


TRNHA provides funds to support scientific and oral history research. Recent funding has been used for mountain lion studies and elk management efforts.


TRNHA assists in the publishing of free trail guides, informational brochures, plant and animal checklists, and the junior ranger program. In addition to free publications TRNHA also helps educate the public by funding and hosting special events in the sites we serve.