Public domain
Oklahoma City, Oklahoma. Oil field discovered about 1930. All the wells are now on the pump
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineOklahoma City, Oklahoma. Oil field discovered about 1930. All the wells are now on the pump. 1942-01-01. Vachon, John. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.