BO
| Baltimore & Ohio | 2 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CO
| Chesapeake & Ohio | 4 |
CSX
| CSX Railroad | 1 |
MP
| Missouri Pacific | 3 |
SBD
| Seaboard System | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
UP
| Union Pacific Railroad Company | 1 |
WM
| Western Maryland | 1 |