Chicago Transit - A Yahoo mailing list and message board devoted to the discussion of mass transit. - http://groups.yahoo.com/group/CHICAGOTRANSIT/
Chicago ''L'' - Information on the rapid transit system known as the 'L' including history, stations, route maps, news, FAQs, and vocabulary. - http://www.chicago-l.org/
CTA - Chicago Transit Authority - The nation's second largest public transportation system provides rail, bus, and other transportation information for travel around Chicago. - http://www.transitchicago.com