The CTA Has Interesting Ideas For a Blue Line Extension Sitting on the Shelf – Chicago Magazine
Chicago ''L''.org: Operations - Lines -> Blue Line
Metra Chicago-Public-Transportation-Map | Chicago neighborhoods map, Chicago map, Chicago tourist
CTA Blue Line track closures planned for renovation project
Metro Blue Line will become the A Line when it reopens - Los Angeles Times
Stations & Map | South Shore Line
Active Transportation Alliance
Data analysis found CTA has only been running about half its schedule Blue Line runs : r/chicago
Maps - CTA
Maps - CTA
Instead of extending the Red Line, some see promise in the Metra Electric - The Chicago Reporter
Montrose station (CTA Blue Line) - Wikipedia
CTA, Metra resume train services after disruptions
Link CTA, Metra to cut commuting costs, boost South Side, south suburbs: Ed Zotti - Chicago Sun-Times
Public Transportation - McCormick Place
Chicago ''L''.org: Stations - Jefferson Park
Blue Line (Route info, alerts & schedules) - CTA
Metra's Unbuilt STAR Line
me Route: Schedules, Stops & Maps - Millennium Station (North) (Updated)
O'Hare station - Wikipedia
Metra Outlines Station, Track, Signaling Improvement Plans - Railway Track and Structures
Moovit - CTA Blue Line Update
Chicago Airports Transit | Choose Chicago
