Public domain
Freight operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The rear brakeman signals the engineer to test the brakes by applying and releasing them. This is the signal for "apply"
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Credit lineFreight operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The rear brakeman signals the engineer to test the brakes by applying and releasing them. This is the sig. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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