Public domain
Production. Pratt and Whitney airplane engines. Crankshaft assembles for Pratt and Whitney airplane engines must undergo a rigid inspection in a large Eastern war plant now working full tilt to supply our armed forces with power installations for our war planes. Pratt and Whitney Aircraft
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Credit lineProduction. Pratt and Whitney airplane engines. Crankshaft assembles for Pratt and Whitney airplane engines must undergo a rigid inspection in a large Eastern war plant now working full tilt to supply. 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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