CTA Surface System History presented by the Illinois Railway Museum
               
Main-Emerson
(H) - denotes route history included in description.
* - denotes maps from the Moffat Collection.
11/26/1973
04/07/1975
04/07/1975 v2
04/07/1975 v3 *
03/30/1980
01/03/1982 (H)
02/20/1984
c10/09/1986 (H)
03/08/1992
09/30/1993 (H)
11/07/1993
06/18/1995 (H)
10/08/1996 (H)
12/13/1998 (H)
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