Public domain
Conversion. Automobiles to 40 mm. anti-aircraft guns. Here, in a former automobile plant, 40 mm. anti-aircraft gun barrels are machined and made ready for front line duty. Since they must shoot fast moving objects at great distances, they must be finished to the very finest of tolerances. Chrysler C
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Credit lineConversion. Automobiles to 40 mm. anti-aircraft guns. Here, in a former automobile plant, 40 mm. anti-aircraft gun barrels are machined and made ready for front line duty. Since they must shoot fast m. 1942-01-01. Palmer, Alfred T., United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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