ATW
| Atlantic and Western | 1 |
BKTY
| Union Pacific Railroad Company | 3 |
DRGW
| Denver & Rio Grande Western | 1 |
FSRR
| FerroSur | 2 |
FXE
| Ferromex | 2 |
IANR
| Iowa Northern Ry | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 2 |
RBOX
| Railbox Company | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 7 |
UP
| Union Pacific Railroad Company | 8 |
USAX
| United States Army | 8 |