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[Device used to test synchronization between machine gun and propeller]
Photograph of a device used to test synchronization between a machine gun and propeller, circa 1918.
[Soldier with machine guns on biplane]
Photograph of an unidentified soldier standing next to a biplane in France, circa 1919. Machine guns are mounted to the cockpit and wings. Inscription on album page: "3 barking beauties on my ship." Part of the Wilbur D. Kennedy photograph album containing six hundred and five (605) black-and-white photographs, as well as a few pieces of ephemera, circa 1917-1919. The photos trace Kennedy's…
[Servicemen during machine gun training]
Photograph of servicemen during machine gun training, circa 1927.Stamped on verso: "This is a Genuine Border Fox Tone Picture. Made by Fox Co., San Antonio, Texas. Copyrighted 1927 by Carl D. Newton."Part of a photograph album related to Julius A. Barr's flight training with the U.S. Army Air Corps at Brooks Field and Kelly Field, Texas, circa 1926-1927.
[Serviceman during machine gun training]
Photograph of a serviceman during machine gun training, circa 1926-1927.Stamped on verso: "Finished by H. G. Rees Opt. Co. 407 E Houston St. San Antonio, Tex."Part of a photograph album related to Julius A. Barr's flight training with the U.S. Army Air Corps at Brooks Field and Kelly Field, Texas, circa 1926-1927.
[Servicemen during machine gun training]
Photograph of servicemen during machine gun training, circa 1926-1927.Part of a photograph album related to Julius A. Barr's flight training with the U.S. Army Air Corps at Brooks Field and Kelly Field, Texas, circa 1926-1927.
[Servicemen with mounted machine gun behind sandbag emplacement, China]
Photograph of two National Revolutionary Army servicemen with a mounted machine gun behind a sandbag emplacement, China, circa 1932-1933. Part of a photograph album related to Julius A. Barr's personal life and flying career in the United States and China, circa 1932-1933.
[Serviceman with mounted machine gun, China]
Photograph of a National Revolutionary Army serviceman with a mounted machine gun, China, circa 1932-1933. Part of a photograph album related to Julius A. Barr's personal life and flying career in the United States and China, circa 1932-1933.
[Machine gun mounted above rear cockpit of Ansaldo A300/4 aircraft]
Photograph of a machine gun mounted above the rear cockpit of an Ansaldo A300/4 aircraft, circa 1919. Part of the photograph album "Aeronautica Ansaldo Avion de Reconaissance / A 300 4."
[Machine gun mounted next to engine on Ansaldo A300/4 aircraf]
Photograph of a machine gun mounted next to the engine on an Ansaldo A300/4 aircraft, circa 1919. Part of the photograph album "Aeronautica Ansaldo Avion de Reconaissance / A 300 4."