Ingersoll v. Klein , 46 Ill. 2d 42 ( 1970 )
Roda v. Berko , 401 Ill. 335 ( 1948 )
Klaxon Co. v. Stentor Electric Manufacturing Co. , 61 S. Ct. 1020 ( 1941 )
Erie Railroad v. Tompkins , 58 S. Ct. 817 ( 1938 )