O'HARA v. Ahlgren , 127 Ill. 2d 333 ( 1989 )
Purtill v. Hess , 111 Ill. 2d 229 ( 1986 )
Schnackenberg v. Towle , 4 Ill. 2d 561 ( 1954 )
Pyne v. Witmer , 129 Ill. 2d 351 ( 1989 )
Outboard Marine Corp. v. Liberty Mutual Insurance , 154 Ill. 2d 90 ( 1992 )