This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
530888Full Citation: Big Foot's band of Miniconjou Sioux, Cheyenne River, South Dakota; 8/9/1890; Photographs of American Military Activities, ca. 1918 - ca. 1981; Records of the Office of the Chief Signal Officer, Record Group 111; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/big-foots-band-of-miniconjou-sioux, May 2, 2024]