Links marked with S or T include historical information on lost passenger Stations and interlocking Towers. Information on towers serving multiple railroads is not directly duplicated, but instead linked to a relevant page for the primary operating railroad.
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)