Sources
- Horan, D. (2005). "Deep Tunnel, Deep Ties". Chicago Tribune, March 14, 2005. Retrieved December 23, 2005.
- American Underground Association's Featured Project. American Underground Construction Association, August 1999. Retrieved December 23, 2005.
- Deep Tunnel Project. City of South Holland Website. Retrieved December 23, 2005.
- Schmidt, E. (2004). Chicago's Tunnel, Reservoir Plan. McGraw-Hill Construction, August 2004. Retrieved December 23, 2005.
- . The Metropolitan Water Reclamation District of Greater Chicago. Retrieved April 21, 2013.
- Jones, S. and Waller, J. (2004). Chicago Public Library - Down the Drain. Chicago Public Library website, August 2004. Retrieved December 23, 2005.
Read more about this topic: Tunnel And Reservoir Plan
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