Become a member today and help TRNHA support North Dakota's National Parks. Proceeds from sales of membership donations support Theodore Roosevelt National Park and Knife River Indian Villages National Historic Site.

Established in 1951, Theodore Roosevelt Nature and History Association (TRNHA), a 501c3 not-for-profit, is a cooperating association developed by the National Park Service to support the educational, scientific, and historic activities of Theodore Roosevelt National Park and Knife River Indian Villages National Historic Site.

Volunteering for Theodore Roosevelt Nature and History Association is a way to show your support and to assist us in meeting our mission of supporting Theodore Roosevelt National Park and Knife River Indian Villages National Historic Site.

Give the gift of supporting North Dakota National Parks!

Gift cards will be sent as a physical gift card which can be used in store or online.