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RailRoad Modeling
For general topics on RailRoad modeling.
Interlocking Diagrams
JPTRR
Staff MemberManaging Editor
RAILROAD MODELING
#051
_VISITCOMMUNITY
Tennessee, United States
Joined: December 21, 2002
KitMaker: 7,772 posts
Historicus Forma: 172 posts
Posted: Sunday, December 01, 2013 - 01:09 PM UTC
These are around Chicago.

http://members.trainorders.com/nkp759/towerindex.html#Ivanhoe