ClickIllinois.com is a Illinois web directory offering useful information including business, tourism, real estate agents, economy, education, arts, sport, investment, finance, science, shopping & environment in Illinois.
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Illinois Central Railroad Historical Society
Dedicated to the preservation of historical and educational.
http://www.icrrhistorical.org/
Illinois State Historical Society
Promoting a deeper understanding of and appreciation for Illinois history.
http://www.historyillinois.org/