Public domain
Freight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. Everything is clear and the head brakeman gives engineer the "high ball" or signal to start
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineFreight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. Everything is clear and the head brakeman gives engineer the "high ball" or signal to start. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.