Fort Peck Indian Agency
The agency is responsible for 12,000 Assiniboine and Sioux enrolled tribal members and the reservation contains about 2,094,000 acres of land within its exterior boundary. There are about 939,165 acres of tribal and allotted surface trust acreage that includes Turtle Mountain Public Domain lands.
- On September 1 1882, N. S. Porter (Fort Peck Indian Agent) submitted his fourth annual report to the Commissioner of Indian Affairs.
- On August 10, 1883, George W. Wilkinson (U.S. Indian Agent for Fort Peck) submitted his first annual report to the Commissioner of Indian Affairs.
- "Fort Peck Agency". Bureau of Indian Affairs. Retrieved 2011-02-05.
- Annual Report of the Commissioner of Indian Affairs to the Secretary of the Interior for the year 1882. Government Printing Office. 1882. p. 108. Retrieved 24 February 2017.
- Report of the Secretary of the Interior... beginning the first session of the 48th Congress Vol II. Washington: Government Printing Office. 1883. p. 161. Retrieved 24 February 2017.
- Military history of the United States.
Major Charles B. Lohmiller, known as Hum-Pa-Zee (Sioux for "Yellow Shoes") served at the Fort Peck Indian Agency, Montana, during 1893-1917, and was Superintendent during 1904-17. Reveals Lohmiller as a man with an unapproachable, ...
- Kenneth D. Shields, Jr. (1998). Fort Peck Indian Reservation. Arcadia Publishing. ISBN 0-7385-4827-8.
Horses Ghost was another one of the Sioux leaders who accompanied Major Charles B. Lohmiller