Public domain
Antiaircraft gun carriage. Assembling the elevating mechanism of a thirty-seven-millimeter antiaircraft gun carriage. This and other control mechanisms of an anti-aircraft gun mounting must operate as easily as your automobile controls so that the gunner may stay trained on his swiftly moving target
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Credit lineAntiaircraft gun carriage. Assembling the elevating mechanism of a thirty-seven-millimeter antiaircraft gun carriage. This and other control mechanisms of an anti-aircraft gun mounting must operate as. 1941-01-01. United States. Office Of War Information, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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