Northern Cheyenne Tribe of the Northern Cheyenne Indian Reservation, Montana

Lands ceded to the United States by treaty, law or executive order, 1851–1884, as Charles C. Royce recorded them in 1899 — 350,231 km² in 7 cessions across Colorado, Kansas, Montana, North Dakota, Nebraska, South Dakota, Wyoming.

A cession records when the United States took title — not the full extent of a homeland, and much land was taken without any treaty. The link between each cession and present-day nations is the one the U.S. Forest Service and the National NAGPRA Program’s dataset records; the nation’s own account comes first. Corrections: [email protected].

Named in the treaties as: Arapaho · Sioux · Northern Cheyenne · Cheyenne · Arikara · Assiniboin · Crow · Gros Ventre

Cessions

Royce no.	Date	As the schedule names the parties	Sources
300	September 17, 1851	Arapaho; Arikara; Assiniboin; Cheyenne; Crow; Gros Ventre; Mandan; Sioux · with 21 other present-day nations	Royce’s schedule · treaty text
426	September 17, 1851; February 18, 1861; October 14, 1865	Arapaho of Upper Arkansas; Cheyenne of Upper Arkansas · with 2 other present-day nations	Royce’s schedule · treaty text
477	September 17, 1851; February 18, 1861; October 14, 1865	Arapaho; Cheyenne · with 2 other present-day nations	Royce’s schedule · treaty text
597	April 29, 1868; September 26, 1876	Arapaho; Northern Cheyenne; Sioux · with 17 other present-day nations	Royce’s schedule · treaty text
598	September 26, 1876	Arapaho; Northern Cheyenne; Sioux · with 17 other present-day nations	Royce’s schedule
599	September 26, 1876	Arapaho; Northern Cheyenne; Sioux · with 17 other present-day nations	Royce’s schedule
658a	November 26, 1884	Cheyenne (northern) · with Cheyenne and Arapaho Tribes, Oklahoma	Royce’s schedule

Lands proven before the Indian Claims Commission

Areas on the Commission’s 1978 map that this nation, or nations it is part of, proved they held when the United States took them:

Cheyenne & Arapaho · Northern Cheyenne · Northern Arapaho · area 112, taken 1851

Trails across these lands

Platte–Snake–Columbia corridor · 288 km within them
Ute Trail · 153 km within them
26 km of unnamed trails in the network

Maps on Native Routes that cover these lands

Cession areas: “Tribal Lands Ceded to the United States” (USDA Forest Service, National NAGPRA Program, EPA and Claudio Saunt, 2018; CC BY 4.0), digitized from Charles C. Royce, Indian Land Cessions in the United States (1899). Outlines simplified to about 1 km. Part of Project Homeland v0.5.2 — how it was made.