Public domain
Detroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking valve springs with an Arbor press for tension
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineDetroit, Michigan. Assembly of Rolls Royce engines at the Packard Motor Car Company. Checking valve springs with an Arbor press for tension. 1943-01-01. Siegel, Arthur S.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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