the Year Ending December 31, 1952, 36-37. Method of Reconstructing the Washington Street Tunnel of the Chicago Railways Company; a New and Economical Method of Constructing Tunnels, Engineering and Contracting, Vol. XXXIII, No. 16 (April 20, 1910); page 356. Note: Illustrated. External links Chicago Cable Car Lines at The Cable Car Guy NCSR at Chicagology.com WCSR at Chicagology.com Public Transportation at Encyclopedia of Chicago Street Railways at Encyclopedia of Chicago Streetcars in Illinois Railroad tunnels in Illinois Chicago Rail technologies Railways by type Transportation buildings and structures in Chicago