AOK
| Arkansas-Oklahoma Railroad | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 2 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
CRLE
| Coe Rail Incorporated | 1 |
DWC
| Canadian National Railways | 1 |
FBOX
| TTX Company | 2 |
HS
| H and S Railroad Company | 2 |
ICG
| Illinois Central Gulf | 1 |
MEC
| Maine Central | 1 |
MNNR
| Minnesota Commercial | 1 |
MP
| Missouri Pacific | 2 |
NS
| Norfolk Southern | 2 |
PGR
| Progressive Rail, Inc | 3 |
SLGG
| Progress Rail Services Corporation | 2 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SRN
| Sabine River & Northern | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
UP
| Union Pacific Railroad Company | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |