To promote and support the historical, scientific, and educational activities of Theodore Roosevelt NP, Knife River Indian Villages NHS, & Upper Souris NWR. Supporting North Dakota's Public Lands Since 1951! THE PURPOSE OF THE COOPERATING ASSOCIATION (AUTHORIZED BY PUBLIC LAW 633, 1946) IS PRIMARILY TO AID THE INTERPRETIVE AND RELATED VISITOR-SERVICE ACTIVITIES OF THE PARK AREAS (NATIONAL PARK SERVICES) AND TO ASSIST APPROPRIATE SERVICE WIDE ACTIVITIES IN THESE AND RELATED FIELDS.