Public domain
Chicago, Illinois. A mail-unloader in operation at Union Station. It extends a moving belt into the car onto which the mail bags are dumped, carried out of the car over to these open trap doors in the railroad platform. Under the trap doors is another conveyor belt running the length of the platform
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineChicago, Illinois. A mail-unloader in operation at Union Station. It extends a moving belt into the car onto which the mail bags are dumped, carried out of the car over to these open trap doors in the. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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