Public domain
Chicago, Illinois. A retarder operator at the south hump at an Illinois Central Railroad yard. From his control board he operates all the retarders and switches on his track
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineChicago, Illinois. A retarder operator at the south hump at an Illinois Central Railroad yard. From his control board he operates all the retarders and switches on his track. 1942-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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