CO
| Chesapeake & Ohio | 9 |
CSX
| CSX Railroad | 7 |
DODX
| Department Of Defense | 8 |
KRL
| Kasgro Rail Lines | 5 |
NKP
| Nickel Plate | 1 |
NS
| Norfolk Southern | 9 |
NW
| Norfolk & Western | 3 |
PC
| Penn Central | 1 |
PRR
| Pennsylvania Railroad | 6 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
SCL
| Seaboard Coast Line | 2 |