American Historical Society of Germans from Russia - Northern Illinois Chapter

Association of St. Louis Area Archivists

BIGWILL - British Interest Group of Wisconsin and Illinois

An organization of individuals (mostly from Wisconsin and Illinois) who are interested in British Isles ancestry and genealogical research in the British Isles.

CAGG-NI - Northern Illinois, USA

Computer Assisted Genealogy Group.

Czech & Slovak American Genealogy Society of Illinois

Eastland Disaster Historical Society

Historical overview of a Chicago and Great Lakes Steamliner Shipwreck - Chicago's greatest maritime disaster.

Genealogical & Historical Societies of Illinois

Genealogy Society of Southern Illinois (GSSI)

Huguenot Society of Illinois

Illiana Jewish Genealogical Society

A Jewish genealogical society covering Chicago's southern suburbs and northwest Indiana.

Illinois Chapter, DFPA

Illinois State Chapter of the Daughters of Founders and Patriots. A society for women who can trace their direct male line to a pre-1687 Founder, including a Revolutionary Patriot.

Illinois Daughters of the American Revolution

Illinois Heritage Society

Illinois Society Daughters of the American Colonists

Illinois Society of Colonial Wars

Illinois Society of the Order of Founders and Patriots of America

Illinois Society War of 1812

Illinois State Genealogical Society

Illinois State Historical Society

Independent Order of Odd Fellows - Illinois

Jurisdictions for the IOOF, Independent Order of Odd Fellows and Rebekahs.