AMTK
| Amtrak | 10 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BLE
| Bessemer & Lake Erie | 2 |
BN
| Burlington Northern | 14 |
BNSF
| BNSF Railway | 3 |
CN
| Canadian National Railways | 5 |
CNW
| Chicago & Northwestern | 13 |
CO
| Chesapeake & Ohio | 2 |
CR
| Conrail | 142 |
CSX
| CSX Railroad | 58 |
DRGW
| Denver & Rio Grande Western | 2 |
IC
| Illinois Central | 2 |
MP
| Missouri Pacific | 2 |
NDYX
| First Union Rail | 4 |
NS
| Norfolk Southern | 412 |
NSSX
| National Salvage and Service Corporation | 2 |
NW
| Norfolk & Western | 15 |
NYC
| New York Central | 3 |
PC
| Penn Central | 16 |
RWCX
| RWC Incorporated | 1 |
SOU
| Southern | 43 |
SP
| Southern Pacific | 4 |
SPSX
| Progress Rail Services Corp | 3 |
UP
| Union Pacific Railroad Company | 29 |
WC
| Wisconsin Central | 1 |