This primary source comes from the Records of the Bureau of Indian Affairs.
National Archives Identifier:
518900Full Citation: Sitting Bear (Satank, Set-angya), a Kiowa chief; half-length, seated; 1868 - 1874 ; Records of the Bureau of Indian Affairs, Record Group 75. [Online Version, https://www.docsteach.org/documents/document/sitting-bear-satank-setangya-a-kiowa-chief-halflength-seated, May 7, 2024]