Chicago Historical Society Chicago Historical Society: Devoted to collecting, interpreting, and presenting the rich multicultural history of Chicago and Illinois. (Organizations) http://www.chicagohs.org/
Illinois Heritage Association Illinois Heritage Association: Perpetuating the history and heritage of Illinois by providing professional services to educational institutions, local government bodies and nonprofit agencies. (Organizations) http://illinoisheritage.prairienet.org/
Society Hill: Illinois Societies Society Hill: Illinois Societies: Directory of Illinois historical societies. Includes contact information and links. (Organizations) http://www.daddezio.com/society/hill/SH-IL-NDX.html
Illinois State Historical Society Illinois State Historical Society: Promoting a deeper understanding of and appreciation for Illinois history. (Organizations) http://www.historyillinois.org/
Illinois Central Railroad Historical Society Illinois Central Railroad Historical Society: Dedicated to the preservation of historical and educational information about the Illinois Central Railroad and the many predecessor railroads that have been part of the Illinois Central System. (Organizations) http://www.icrrhistorical.org/