Public domain
Freight train operations on the Chicago an Northwestern Railroad between Chicago and Clinton, Iowa. In the engineer's cab, after the train has arrived at Clinton and the engine is being taken over to the roundhouse. Note that the key has been put back into the automatic train control mechanism
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Credit lineFreight train operations on the Chicago an Northwestern Railroad between Chicago and Clinton, Iowa. In the engineer's cab, after the train has arrived at Clinton and the engine is being taken over to . 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.