Public domain
Aluminum casting. Shelf after shelf of aluminum castings on their way to the heat treating oven for low temperature precipitation treatment. These castings are for aluminum piston heads. Aluminum Industries Inc., Cincinnati, Ohio
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineAluminum casting. Shelf after shelf of aluminum castings on their way to the heat treating oven for low temperature precipitation treatment. These castings are for aluminum piston heads. Aluminum Indu. 1942-01-01. United States. Office Of War Information, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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