Public domain
Freight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and Hammond, Indiana. Fuses (flares) are used for signaling at twilight and when visibility is otherwise poor
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineFreight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and Hammond, Indiana. Fuses (flares) are used for signaling at twilight and when visibility is otherwise poor. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.