This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
530737Full Citation: Close-up view of an American major in the basket of an observation balloon flying over territory near front lines; 6/1918; Records of the Office of the Chief Signal Officer, Record Group 111. [Online Version, https://www.docsteach.org/documents/document/closeup-view-of-an-american-major-in-the-basket-of-an-observation-balloon-flying-over-territory-near-front-lines, May 12, 2024]