Public domain
Production. Pratt and Whitney airplane engines. A cover case for a Pratt and Whitney airplane engine is milled on a Milwaukee vertical miller in a large Eastern plant now working at full tilt to supply our armed forces with superior power installations. Pratt and Whitney Aircraft
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Credit lineProduction. Pratt and Whitney airplane engines. A cover case for a Pratt and Whitney airplane engine is milled on a Milwaukee vertical miller in a large Eastern plant now working at full tilt to suppl. 1942-01-01. United States. Office Of War Information, Feininger, Andreas. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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