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Chicago, Illinois. Telegraph switch board of the Pennsylvania railroad in the Pennsylvania telegraph room at the Union Station

Chicago, Illinois. Telegraph switch board of the Pennsylvania railroad in the Pennsylvania telegraph room at the Union Station

Pennsylvania Railroad Terminal (Union Station), Pittsburgh-  removing the soot 1948

Pennsylvania Railroad Terminal (Union Station), Pittsburgh- removing the soot 1948

Chicago, Illinois. Railroad worker employed in the Chicago and Northwestern Railroad locomotive shops, ca. 1940.

Chicago, Illinois. Railroad worker employed in the Chicago and Northwestern Railroad locomotive shops, ca. 1940.

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