Crow Indian territory - Fort Laramie treaty (1851) — Crow territory (area 517, 619 and 635) as described in the treaty in present Montana and Wyoming. It includes the western Powder River area and the Yellowstone area with tributaries as Tongue River, Rosebud River and Bighorn River.
Photo Credit: By U.S. government, maps - Public Domain, https://commons.wikimedia.org/w/index.php?curid=61256075