Public domain
Rear brakeman gets on the caboose and signals engineer that all's well at the rear end of the Chicago and Northwestern Railroad freight train
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineRear brakeman gets on the caboose and signals engineer that all's well at the rear end of the Chicago and Northwestern Railroad freight train. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.