Public domain
Production. Airplane manufacture, general. Bars of Kirksite metal, ready to be placed in the melting pot for use in dies, stand outside the foundry at the Inglewood, California, foundry of North American Aviation, Incorporated. Dies of this metal are used in forming sheet metal parts of war planes
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineProduction. Airplane manufacture, general. Bars of Kirksite metal, ready to be placed in the melting pot for use in dies, stand outside the foundry at the Inglewood, California, foundry of North Amer. 1942-01-01. Palmer, Alfred T., United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.