Public domain
Detail of oil drilling equipment: hook of the traveling block, links and clamp of the elevator, hose connection from mud hog and swivel. Oil well, Kilgore, Texas
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineDetail of oil drilling equipment: hook of the traveling block, links and clamp of the elevator, hose connection from mud hog and swivel. Oil well, Kilgore, Texas. 1939-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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