ABOX
| TTX Company | 4 |
AN
| Apalachicola Northern | 1 |
CN
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 7 |
DRGW
| Denver & Rio Grande Western | 2 |
EEC
| East Erie Commercial Railroad | 5 |
GFRR
| Georgia and Florida Railnet | 5 |
HS
| H and S Railroad Company | 8 |
IBT
| International Bridge and Terminal Company | 3 |
MDW
| Minnesota Dakota and Western Railway Com | 8 |
MP
| Missouri Pacific | 2 |
NS
| Norfolk Southern | 7 |
PSMX
| Esco Corporation | 9 |
RBOX
| Railbox Company | 5 |
SP
| Southern Pacific | 7 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
TBOX
| TTX Company | 5 |
UP
| Union Pacific Railroad Company | 9 |