Public domain
Aluminum casting. To make certain that aluminum is being treated in exact accordance with specifications, this worker sets instruments to the correct temperature on heat treating controls of unit. Aluminum Industries Inc., Cincinnati, Ohio
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineAluminum casting. To make certain that aluminum is being treated in exact accordance with specifications, this worker sets instruments to the correct temperature on heat treating controls of unit. Alu. 1942-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.