Public domain
Pump head is assembled before attaching to pump rod. John Fredrick well project, Saint Mary's County, Maryland
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit linePump head is assembled before attaching to pump rod. John Fredrick well project, Saint Mary's County, Maryland. 1941-01-01. Collier, John, Jr., Collier, John. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.