A website for the Illinois Courts (Supreme, Appellate and Circuit Courts). Opinions, rulings, oral argument calendars and video, rules, judicial events, information about judges, and much more provided. Opinions archived 1996-present.
Official reports of decisions by the Supreme Court of Illinois. The library has published case decisions from volume 1, 1819 (Government Information 345.42 I29) in addition to the online editions available from free and subscription sources.
Constitution of the State of Illinois
Hosted on the Illinois General Assembly website
1970 Illinois Constitution Annotated for Legislators, 5th edition (2018).
Prepared by the Illinois Legislative Research Unit