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Present Day Nations
Arapaho Tribe of the Wind River Reservation, Wyoming
Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation, Montana
Cheyenne River Sioux Tribe of the Cheyenne River Reservation, South Dakota
Cheyenne and Arapaho Tribes, Oklahoma
Fort Belknap Indian Community of the Fort Belknap Reservation of Montana

Associated Cessions

Cession 300