Upton Sinclair's book The Jungle resulted in the creation of the 1906 Meat Inspection Act and the Pure Food and Drug Act.
Chicago Syndicate was created in 1995.
Chicago Hounds was created in 2006.
Duke of Chicago was created in 1949.
Chicago Throwbacks was created in 2007.
Chicago Soldiers was created in 2004.
Chicago Blitz was created in 1983.
Chicago Marathon was created in 1977.
FSN Chicago was created in 1982.
Chicago Force was created in 2003.
Chicago Theatre was created in 1921.
Inn of Chicago was created in 1927.
Chicago Bruisers was created in 1987.