AMTK
| Amtrak | 2 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
BLOL
| Bloomer Shippers Connecting Railroad Co. | 1 |
BO
| Baltimore & Ohio | 1 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 4 |
CR
| Conrail | 3 |
CSS
| Chicago South Shore And South Bend | 4 |
CSX
| CSX Railroad | 1 |
CTA
| Chicago Transit Authority | 1 |
FWX
| FWX | 1 |
GBW
| Green Bay & Western | 1 |
GTW
| Grand Trunk Western | 3 |
HABX
| Habco International Incorporated | 2 |
ICG
| Illinois Central Gulf | 1 |
IORY
| Indiana & Ohio | 1 |
ISRR
| Indiana Southern | 1 |
KYLE
| Kyle Railroad | 1 |
LN
| Louisville & Nashville | 3 |
LRGX
| LRGX | 6 |
LSTT
| Lake Superior Terminal Transfer | 1 |
METX
| METRA | 1 |
MILW
| Milwaukee Road | 1 |
MON
| Monon Route | 1 |
NS
| Norfolk Southern | 3 |
NW
| Norfolk & Western | 1 |
PC
| Penn Central | 3 |
RTD
| Regional Transportation District | 1 |
SOU
| Southern | 2 |
SRBX
| SRBX | 4 |
SRGX
| SRGX | 4 |
SRS
| Sperry Rail Service | 1 |
UP
| Union Pacific Railroad Company | 1 |