Cheyenne River Indian Agency (South Dakota)

History
The Cheyenne River Agency was established in 1869 and is located in Eagle Butte, South Dakota, Its primary responsibility is for the Sans Arc Band of Cheyenne Indians. It was placed under the Aberdeen Area Office in 1949.

Records
Letters received from the Cheyenne River Agency, 1871-1880, are included among Letters Received by the Office of Indian Affairs, filmed by the National Archives as their Microcopy M248, Rolls 127-141. This set of records is also available at the Family History Library and its family history centers (their microfilm roll numbers 1660857 thru 1660861).

Reports of Inspection of the Field Jurisdictions of the Office of Indian Affairs, 1873-1900 have been microfilmed by the National Archives as part of Microcopy Number M1070. The reports for Cheyenne River Agency, 1874-1890, are on roll 5 of that Microcopy set. Copies are available at the National Archives, their Regional Archives, and at the Family History Library and its family history centers (their microfilm roll number 1617678).

Microfilm copies of “Narrative and Statistical Reports” for the Cheyenne River Agency, 1907-1938, are included in National Archives Microcopy M1011, Rolls 16-17, available in the National Archives system and in the collections of the Family History Library in Salt Lake City (their microfilm roll numbers 1724234-1724235).

Annual Indian Census Rolls were taken at this agency for 1886-1887, 1890-1892, 1894-1907, and 1909-1942. These rolls have been microfilmed by the National Archives as part of their Microcopy Number M595, rolls 33 thru 40. Copies of these records are also available at the National Archives, their Regional Archives, and at the Family History Library and its family history centers (their microfilm roll numbers 574192-574199). These census rolls are also available online at Ancestry.com's subscription web site.