BO
| Baltimore & Ohio | 1 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 2 |
GPFX
| General American Marks Company | 1 |
INTX
| Interstate Commodities Inc. | 1 |
NAHX
| General Electric Rail Services | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NYC
| New York Central | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
UP
| Union Pacific Railroad Company | 4 |