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|Title||Underground freight system|
|Description||Caption: "Loaded freight train at street intersection". From text: "Chicago's great subway, or underground freight railroad, is now ready for operation. It is the most complete and extensive of any tunnel system in the world. … Every street in the down-town district, and many outside streets, are duplicated forty feet below the surface by the tunnel system. The entire subway is electric lighted, perfectly dry, clean and well-ventilated."|
|Link to the Full-Text||http://hdl.handle.net/10111/UIUCOCA:chicagogreatcent321906chic|
|Repository||University of Illinois at Urbana-Champaign|
|Book Title||Chicago, the Great Central Market : a magazine of business|