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Conversion. Automobiles to 40 mm. anti-aircraft guns. 40 mm. anti-aircraft gun barrels produced in a former automobile plant. Those pictured above are about halfway through the manufacturing process. Chrsyler Corporation, Highland Park, Detroit. Sourced from the Library of Congress.

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Conversion. Automobiles to 40 mm. anti-aircraft guns. 40 mm. anti-aircraft gun barrels produced in a former automobile plant. Those pictured above are about halfway through the manufacturing process. Chrsyler Corporation, Highland Park, Detroit. Sourced from the Library of Congress.

More