Yankton Indian Agency (South Dakota)

History
The Yankton Agency was established in 1859 and abolished in 1933. However, it was opened as a sub-agency to the Rosebud Agency in 1936, and in 1967 was reestablished as an agency.

Part transferred to Rosebud and part to Winnebago, 30 June 1933.

Records
Letters received by the Office of Indian Affairs from the Yankton Agency, 1859-1876, 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 on their microfilm roll numbers 1661689 thru 1661692.