Public domain
Production. Pratt and Whitney airplane engines. Installing rings on pistons for Pratt and Whitney airplane engines in a large Eastern plant. The pistons, the rings, and the cylinders in which they will be fitted, are built to the finest American standards. Pratt and Whitney Aircraft
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineProduction. Pratt and Whitney airplane engines. Installing rings on pistons for Pratt and Whitney airplane engines in a large Eastern plant. The pistons, the rings, and the cylinders in which they wil. 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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