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Production. Pratt and Whitney airplane engines. A new Pratt and Whitney airplane motor set up on a test stand at a large…
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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 factories. Pratt and Whitney Aircraft. Sourced from the Library of Congress.

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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 factories. Pratt and Whitney Aircraft. Sourced from the Library of Congress.

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