This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
530721Full Citation: Twenty-six aeroplanes in line for inspection, aviation field, Issoudon, France; 4/1918; Photographs of American Military Activities, ca. 1918 - ca. 1981; Records of the Office of the Chief Signal Officer, Record Group 111. [Online Version, https://docsteach.org/documents/document/twentysix-aeroplanes-in-line-for-inspection-aviation-field-issoudon-france, March 17, 2025]