The People v. Burson , 11 Ill. 2d 360 ( 1957 )
People v. Pickett , 54 Ill. 2d 280 ( 1973 )
People v. Underwood , 72 Ill. 2d 124 ( 1978 )
People v. Roberts , 75 Ill. 2d 1 ( 1979 )
People v. Jenkins , 69 Ill. 2d 61 ( 1977 )
Chapman v. California , 87 S. Ct. 824 ( 1967 )