This primary source comes from the Records of the National Park Service.
National Archives Identifier:
520069Full Citation: Chief Powder Face of the Arapaho; 1864; Indians of the Desert, Mesa and Canyon; Henry Peabody Collection, 1959 - 1960; Records of the National Park Service, Record Group 79; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/chief-powder-face-arapaho, April 25, 2024]