Links marked with S or T include historical information on lost passenger Stations and interlocking Towers. Beyond the Chicago area, information on towers serving multiple railroads is generally not duplicated among branch lines.
La Salle Line (La Salle to Zearing) S
(formerly Streator to Zearing)
Rockford Line (Flag Center to Rockford) ST
Mt. Morris Line (Oregon to Mt. Morris)
(formerly Oregon to Forreston)