AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATW
| Atlantic and Western | 2 |
BN
| Burlington Northern | 9 |
BNSF
| BNSF Railway | 55 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 4 |
CP
| Canadian Pacific Railway | 3 |
CR
| Conrail | 32 |
CSS
| Chicago South Shore And South Bend | 7 |
CSX
| CSX Railroad | 65 |
CTRN
| Union Pacific Railroad Company | 2 |
DLRX
| General Electric Rail Services | 1 |
EJE
| Elgin Joliet and Eastern | 23 |
FXE
| Ferromex | 1 |
GTW
| Grand Trunk Western | 10 |
GVSR
| Galveston Railroad L.P. | 1 |
IC
| Illinois Central | 2 |
IHB
| Indiana Harbor Belt | 48 |
IHP
| IHP | 1 |
INLX
| Incoal Company | 9 |
KCS
| Kansas City Southern | 7 |
LW
| Louisville and Wadley Railway Company | 3 |
MKT
| Missouri-Kansas-Texas | 2 |
MP
| Missouri Pacific | 10 |
NOKL
| Northwestern Oklahoma | 6 |
NS
| Norfolk Southern | 75 |
NSAX
| National Steel Corporation | 1 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 11 |
SOU
| Southern | 4 |
SP
| Southern Pacific | 4 |
TFM
| Kansas City Southern De Mexico | 3 |
TR
| Tomahawk Railway L.P. | 4 |
UP
| Union Pacific Railroad Company | 8 |
WC
| Wisconsin Central | 1 |
WE
| Wheeling & Lake Erie | 6 |