Historical clue formulations

• Illinois college town — 2019-08-09
• University of Illinois city — 2018-04-22
• University of Illinois city — 2018-01-08
• Illinois college town — 2017-06-18
• Midwestern twin city — 2012-09-01
• It has a twin city in the Midwest — 2009-05-22
• Illinois college town — 2003-12-04
• University of Illinois locale — 2003-09-02
• University of Illinois site — 1995-03-03