This primary source comes from the Records of the National Park Service.
National Archives Identifier:
519946Full Citation: Section of house, 'Cliff Palace, Mesa Verde National Park,' Colorado, 1941; 1941; Records of the National Park Service, Record Group 79. [Online Version, https://www.docsteach.org/documents/document/section-of-house-cliff-palace-mesa-verde-national-park-colorado-1941, May 11, 2024]