AGR
| Alabama and Gulf Coast | 7 |
AM
| Arkansas & Missouri | 2 |
AN
| Apalachicola Northern | 1 |
AR
| Aberdeen and Rockfish | 6 |
ATW
| Atlantic and Western | 21 |
BM
| Boston & Maine | 1 |
CP
| Canadian Pacific Railway | 7 |
CPAA
| Canadian Pacific Railway | 9 |
CUOH
| Columbus and Ohio River Railroad Company | 11 |
ELS
| Escanaba and Lake Superior Railroad Comp | 12 |
FCRD
| First Coast Railway | 11 |
FSRR
| FerroSur | 8 |
FXE
| Ferromex | 8 |
GTRA
| Golden Triangle Railroad | 1 |
HS
| H and S Railroad Company | 3 |
ICG
| Illinois Central Gulf | 1 |
LRWN
| Little Rock & Western | 25 |
MB
| Meridian & Bigbee | 11 |
MQT
| Marquette Rail | 11 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 7 |
PRL
| Penn Eastern Rail Lines Incorporated | 2 |
RBOX
| Railbox Company | 1822 |
SGLR
| Seminole Gulf | 17 |
SLR
| St Lawrence & Atlantic | 2 |
SOU
| Southern | 14 |
SRN
| Sabine River & Northern | 5 |
WLO
| Waterloo Railway Company (Illinois Central) | 3 |