AOK
| Arkansas-Oklahoma Railroad | 2 |
BLE
| Bessemer & Lake Erie | 2 |
BN
| Burlington Northern | 13 |
BNSF
| BNSF Railway | 8 |
CAGY
| Columbus & Greenville Railway | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CIGX
| THE CIT GROUP/CAPITAL FINANCE, INC. | 5 |
CN
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 6 |
CP
| Canadian Pacific Railway | 8 |
CR
| Conrail | 187 |
CSS
| Chicago South Shore And South Bend | 17 |
CSX
| CSX Railroad | 50 |
CTRN
| Union Pacific Railroad Company | 2 |
FURX
| First Union Rail | 1 |
FXE
| Ferromex | 1 |
GRW
| Gary Railway | 15 |
GTW
| Grand Trunk Western | 2 |
IC
| Illinois Central | 4 |
IHB
| Indiana Harbor Belt | 2 |
KCS
| Kansas City Southern | 3 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 7 |
NDYX
| First Union Rail | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 37 |
NW
| Norfolk & Western | 18 |
NYC
| New York Central | 191 |
SMW
| St Marys Railway West LLC | 1 |
SOO
| Soo Line | 3 |
SOU
| Southern | 6 |
SP
| Southern Pacific | 1 |
TFM
| Kansas City Southern De Mexico | 4 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 5 |
WE
| Wheeling & Lake Erie | 1 |