Public domain
Production. Airplane manufacture, general. Huge drop hammers work day and night forming sheet metal parts for United Nations bombers and fighters at the Inglewood, California, plant of North American Aviation, Incorporated. The heavy hemp rope is used to snub the hammer so that it forms the part und
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Credit lineProduction. Airplane manufacture, general. Huge drop hammers work day and night forming sheet metal parts for United Nations bombers and fighters at the Inglewood, California, plant of North American . 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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