U.S. Signal Corp 1918, May A Scharf mounted visible gun camera, similar to the Lewis gun, used by the Air Service for training flyers in aerial gunnery at Ellington Field, Houston, Texas
This is an example of the rationale behind American military censorship during the First World War.
Included in - Lieut. Col. Kendall Banning, Signal Reserve Corps, U.S.A., 1926, The Military Censorship of Pictures: Photographs that came under the ban during the World War - and why, (Typescript) www.fas.org/sgp/eprint/photos.pdf
