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Thornton-Pickard Mark III aerial gun, 1915 Flash Photography, Photography Techniques, Used Cameras, Thornton, Colour Photograph, World War I, National Museum, American History, Underwater
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Thornton-Pickard Mark III aerial gun, 1915

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During World War I, aerial “observers” flew alongside pilots in two-seater planes operating machine-gun cameras. Military and Special-Use Cameras Research in the federal governm… 
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