The Law Library's set of regional reporters contains cases from all fifty states from the 1880's to the present, on the fourth floor. We also have official reporters for all states from statehood until 1900 in the South Annex. Official state reporters after 1900 are in the Mansueto Library. South Annex and Mansueto materials may be paged.
State court opinions are also available online in the following sources:
The Court Statistics Project, sponsored by the National Center for State Courts, lets you generate reports on state court case loads, using data collected for their annual report, State Court Caseload Statistics.