Public domain
Pipe wrench is used to keep drop shaft from slipping into casing before pump is attached. 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 linePipe wrench is used to keep drop shaft from slipping into casing before pump is attached. 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.