Public domain
Freight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The rear brakeman signals the engineer to apply and release the brakes as a test. This is the "release" sign
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Credit lineFreight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The rear brakeman signals the engineer to apply and release the brakes as a test. This is the "rele. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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