Public domain
Production. Pratt and Whitney airplane engines. A new Pratt and Whitney airplane motor set up on a test stand at a large Eastern plant. When this engine has proved its ability to meet the high standards of the factory, it will be shipped with many others to one or another of the great aircraft facto
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Credit lineProduction. Pratt and Whitney airplane engines. A new Pratt and Whitney airplane motor set up on a test stand at a large Eastern plant. When this engine has proved its ability to meet the high standar. 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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