Supreme Court of Illinois April 1987 casesCentral Illinois Public Service Co. v. Pollution Control BoardRuffiner v. Material Service Corp.People v. JohnsonPeople v. CabreraMassa v. Dep't of Regis. EducPeople v. WilsonSwisher v. DuffyWeaver v. Midwest Towing, Inc.Walker v. HardimanPeople v. ThomasPeople v. EricksonPeople v. SilagyBoyd v. Madison Mutual Insurance Co.United Airlines, Inc. v. City of ChicagoIn re SegallKoss v. SlaterCatlett v. NovakPeople v. Shum