This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
530895Full Citation: Rain-in-the-Face, a Hunkpapa Sioux; bust-length, full-face, wearing feathered headdress ; Records of the Office of the Chief Signal Officer, Record Group 111. [Online Version, https://www.docsteach.org/documents/document/rainintheface-a-hunkpapa-sioux-bustlength-fullface-wearing-feathered-headdress, March 29, 2024]