Public domain
Mr. Slater, well engineer, and helper, settle drop pipe into casing. 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 lineMr. Slater, well engineer, and helper, settle drop pipe into casing. 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.