Public domain
Rear brakeman standing with a flag behind his train while he waits for a Chicago and Northwestern Railroad passenger train to go by. When it has passed, the freight can get on the main line
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineRear brakeman standing with a flag behind his train while he waits for a Chicago and Northwestern Railroad passenger train to go by. When it has passed, the freight can get on the main line. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.