Here are some links to other popular sites:

Catalog of Items on display

JCHS Youtube Channel

Daniel Brush Chapter of the Daughters of the American Revolution

Illinois State Genealogical Society

Illinois State Historical Society

Illinois Death Certificates Database

Illinois Death Index Pre-1916

Illinois Marriage Index 1763-1900

Illinois Regional Archives Depository (IRAD) System

Illinois Soldiers' & Sailors' Home Residents 1887-1916

Illinois County Boundaries

Genealogy Trails: Jackson County Illinois

Illinois Historic Group Directory 

Ancestry

Family Search

Find A Grave

Fold 3 Military Records

Illinois Humanities Website 

Past Webinars 

Order of the Founders and Patriots of America

Boston Tea Party Descendants Program

The database of executions in the United States of America