AOK
| Arkansas-Oklahoma Railroad | 1 |
BN
| Burlington Northern | 4 |
BNSF
| BNSF Railway | 3 |
CP
| Canadian Pacific Railway | 15 |
CSX
| CSX Railroad | 2 |
DODX
| Department Of Defense | 2 |
FEC
| Florida East Coast | 2 |
FTTX
| TTX Company | 8 |
FURX
| First Union Rail | 1 |
ICE
| Iowa Chicago and Eastern | 3 |
ITTX
| TTX Company | 1 |
JTTX
| TTX Company | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 1 |
OTTX
| TTX Company | 4 |
PTTX
| TTX Company | 23 |
QTTX
| TTX Company | 8 |
RTTX
| TTX Company | 1 |
SOU
| Southern | 2 |
TTCX
| TTX Company | 1 |
TTEX
| TTX Company - Articulated Flat Cars (TOFC/COFC) | 2 |
TTHX
| TTX Company - Flat Cars | 2 |
UP
| Union Pacific Railroad Company | 2 |