Supreme Court of Illinois April 1987 casesCentral Illinois Public Service Co. v. Pollution Control BoardUnited Airlines, Inc. v. City of ChicagoSwisher v. DuffyMassa v. Dep't of Regis. EducRuffiner v. Material Service Corp.People v. EricksonBoyd v. Madison Mutual Insurance Co.People v. SilagyPeople v. JohnsonPeople v. CabreraPeople v. WilsonWalker v. HardimanPeople v. ThomasWeaver v. Midwest Towing, Inc.In re SegallKoss v. SlaterPeople v. ShumCatlett v. Novak