Public domain
A special drill press cuts a great number of holes simultaneously in casings for engines at the Pratt and Whitney Aircraft Corporation. East Hartford, Connecticut
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineA special drill press cuts a great number of holes simultaneously in casings for engines at the Pratt and Whitney Aircraft Corporation. East Hartford, Connecticut. 1940-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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