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Providing support, services, and educational merchandise to enhance visitor experience
and enjoyment through historical, scientific, and educational activities in
Theodore Roosevelt National Park and Knife River Indian Villages National Historic Site.

Featured products

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Badlands 3 Canvas Set

From $ 130.00
From $ 130.00
Badlands 3 Canvas SetBadlands 3 Canvas Set

Mornings on Horseback

$ 20.00
$ 20.00
Mornings on Horseback

North Dakota's Geologic Legacy

$ 39.95
$ 39.95
North Dakota's Geologic Legacy

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Join TRNHA and Show Your Support for North Dakota's Public Lands

  • Become a Member

    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.

    Purchase Your Membership 

  • Donate

    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.

    Donate Now 

  • Volunteer

    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.

    Volunteer Opportunities