Public domain
A young woman employee in North American Aviation's plaster forms department mixes plaster of paris for master plaster formers from which metal (kirksite) dies are formed
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineA young woman employee in North American Aviation's plaster forms department mixes plaster of paris for master plaster formers from which metal (kirksite) dies are formed. 1942-01-01. Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.