"Boul Mich Tour". City of Chicago Department of Planning and Development, Landmarks Division. 2003. Archived from the original on September 30, 2007. Retrieved May 31, 2007.
"Boul Mich Tour". City of Chicago Department of Planning and Development, Landmarks Division. 2003. Archived from the original on September 30, 2007. Retrieved May 31, 2007.