This primary source comes from the Records of the War Department General and Special Staffs, 1860 - 1952.
Full Citation: Photograph 165-WW-1A-6; Airplanes - Accidents - Air Service. Wreck at Mather Field. Calif; 1917-1918; Airplanes - Accidents; American Unofficial Collection of World War I Photographs, 1917 - 1918; Records of the War Department General and Special Staffs, 1860 - 1952, Record Group 165; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/air-service-wreck-mather-field, April 25, 2024]