Public domain
Production. Airplane engines. Airplane engines on the test block at a Midwest plant. After tests are completed, the engine will be torn down for minute inspection of all parts. It will then be reassembled and again tested before shipment to an airplane factory. Continental Motors, Muskegon
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Credit lineProduction. Airplane engines. Airplane engines on the test block at a Midwest plant. After tests are completed, the engine will be torn down for minute inspection of all parts. It will then be reassem. 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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