AOK
| Arkansas-Oklahoma Railroad | 1 |
ATW
| Atlantic and Western | 9 |
BN
| Burlington Northern | 4 |
BNSF
| BNSF Railway | 13 |
CAGY
| Columbus & Greenville Railway | 5 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CN
| Canadian National Railways | 13 |
COER
| Crab Orchard & Egyptian | 2 |
CR
| Conrail | 15 |
CRLE
| Coe Rail Incorporated | 2 |
CSS
| Chicago South Shore And South Bend | 10 |
CSX
| CSX Railroad | 24 |
CTRN
| Union Pacific Railroad Company | 1 |
DCCX
| McDonnell Douglas Corporation | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
GTW
| Grand Trunk Western | 27 |
HS
| H and S Railroad Company | 3 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 1 |
IHB
| Indiana Harbor Belt | 1 |
KCS
| Kansas City Southern | 4 |
LRS
| Laurinburg and Southern | 2 |
LW
| Louisville and Wadley Railway Company | 5 |
NOKL
| Northwestern Oklahoma | 4 |
NS
| Norfolk Southern | 35 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 5 |
SMW
| St Marys Railway West LLC | 5 |
SOU
| Southern | 3 |
TFM
| Kansas City Southern De Mexico | 15 |
TR
| Tomahawk Railway L.P. | 4 |
UP
| Union Pacific Railroad Company | 26 |
WRWK
| Providence & Worchester Railroad | 1 |