- University of Illinois at Urbana-Champaign, University Library
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.
- Chicago , IL
- Images in this collection were digitized through the University of Illinois Library's participation in the Open Content Alliance and may be used freely. Attribution to the University of Illinois is appreciated. High-resolution images can be downloaded from the Internet Archive at www.archive.org. For further information, contact firstname.lastname@example.org.