Public domain
Production. Milling machines and machine castings. These are spur gears piled up at a large Midwest machine tool plant producing highly essential equipment for making various war materials
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Credit lineProduction. Milling machines and machine castings. These are spur gears piled up at a large Midwest machine tool plant producing highly essential equipment for making various war materials. 1942-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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