Public domain
Chicago, Illinois. In the interlocking tower at Union Station. It is here that all inbound and outbound traffic is controlled. The men work entirely by the board, hardly ever looking out of a window to see an actual train
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Credit lineChicago, Illinois. In the interlocking tower at Union Station. It is here that all inbound and outbound traffic is controlled. The men work entirely by the board, hardly ever looking out of a window t. 1943-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.