Public domain
Oil drillers preparing to take a core to determine nature of sand in the basin of the port of Houston, Texas
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineOil drillers preparing to take a core to determine nature of sand in the basin of the port of Houston, Texas. 1939-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.