BN
| Burlington Northern | 2 |
BO
| Baltimore & Ohio | 4 |
CSX
| CSX Railroad | 23 |
MP
| Missouri Pacific | 1 |
NOKL
| Northwestern Oklahoma | 8 |
NRLX
| CIT Group/Capital Finance, Inc | 5 |
NW
| Norfolk & Western | 4 |
NYC
| New York Central | 3 |
PRSX
| Progress Rail Service | 1 |
SBD
| Seaboard System | 1 |
SOU
| Southern | 12 |
WC
| Wisconsin Central | 1 |
WE
| Wheeling & Lake Erie | 1 |