Illinois Reports
Official reports of decisions by the Supreme Court of Illinois.  The library has published case decisions from volume 1, 1819 (Government Information and Oak Grove Library Center 345.42 I29) in addition to the online editions available from free and subscription sources.

• Lexis-Nexis Academic (NU affiliated users only) - Illinois Supreme Court decisions 1819-present, Illinois Court of Appeals from 1877, Illinois Court of Claims from 1889, US Federal 7th Circuit District Court and Court of Appeals cases,  Bankruptcy and Tax Court cases
• HeinOnline (NU affiliated users only) - provides case decisions from the Illinois Supreme Court (1819-present), Illinois Court of Appeals (1877-1931),  Illinois Court of Claims (1906-1960)
• Illinois Courts - A website for the Illinois Courts (Supreme, Appellate and Circuit Courts) freely available to all, Opinions archived 1996-present. Opinions, rulings, oral argument calendars and video, rules, judicial events, information about judges, and much more provided.

Opinion Archive
This is an archive of court opinions from the Illinois Supreme Court, the five Appellate Courts, from 1996 to the present; the Workers Compensation (from 2005 to present) and the Industrial Commission (from 1996 - 2004).

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