Fort Berthold Indian Agency (North Dakota)

History
The Fort Berthold Agency was established in 1864 from a division of the Upper Missouri Agency. At that time, the Arikara, Grosventre, Mandan, Assiniboin, and Crow Indians living near Fort Berthold on the Missouri River were under the jurisdiction of the Fort Berthold Agency. The Assiniboin, Crow, and some of the Grosventres were assigned to other agencies in 1869 and 1870.

Records
Letters received by the Office of Indian Affairs from the Fort Berthold Agency, 1867-1880, have been microfilmed by the National Archives as part of their Microcopy Number M234. Copies are available at the National Archives and at the Family History Library and its family history centers (their microfilm roll numbers 1661022 thru 1661029).

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 Fort Berthold Agency, 1873-1900, are on roll 13 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 1617686).

Microfilm copies of “Narrative and Statistical Reports” for the Fort Berthold Agency, 1905-1937, are included in National Archives Microcopy M1011, Rolls 46-47, available in the National Archives system and in the collections of the Family History Library in Salt Lake City, beginning with their microfilm numbers 1724264-1724265.

Annual Indian Census Rolls were taken at this agency for 1889-1893 and from 1895 thru 1939. These rolls have been microfilmed by the National Archives as part of their Microcopy Number M595, rolls 132 thru 136. 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 numbers 576487-576491). These census rolls are also available online at Ancestry.com's subscription web site.