AOK
| Arkansas-Oklahoma Railroad | 2 |
BAR
| Bangor & Aroostook | 1 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 1 |
CNIS
| Canadian National Railways | 2 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 1 |
CVC
| Canadian National Railways | 1 |
DWC
| Canadian National Railways | 2 |
IBT
| International Bridge and Terminal Company | 1 |
MEC
| Maine Central | 1 |
MMA
| Montreal, Maine & Atlantic | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
SLC
| San Luis Central Railroad Company | 1 |
SP
| Southern Pacific | 1 |
TBOX
| TTX Company | 3 |
TFM
| Kansas City Southern De Mexico | 2 |
WC
| Wisconsin Central | 2 |
WCCL
| Wisconsin Central | 1 |
WHCX
| Western Hay Company | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
YKR
| York Rail | 1 |