AEQX
| ATEL Equipment Corporation | 4 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
ATTX
| TTX Company - Container Flats | 9 |
ATW
| Atlantic and Western | 1 |
AWXX
| East Carbon development Company | 11 |
BBCX
| ABB Power Generation Incorporated | 2 |
BN
| Burlington Northern | 9 |
BNSF
| BNSF Railway | 9 |
BPRR
| Buffalo and Pittsburgh | 1 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 7 |
CW
| Colorado and Wyoming | 1 |
DODX
| Department Of Defense | 78 |
DRGW
| Denver & Rio Grande Western | 2 |
DSEX
| East Carbon Development Company | 2 |
ECXX
| East Carbon Development Company | 7 |
FEC
| Florida East Coast | 7 |
FTTX
| TTX Company | 4 |
GBRX
| Greenbrier Leasing Corporation | 4 |
GIMX
| General American Marks Company | 5 |
HS
| H and S Railroad Company | 1 |
ICE
| Iowa Chicago and Eastern | 4 |
IPCX
| International Paper Company | 1 |
ITTX
| TTX Company | 2 |
KRL
| Kasgro Rail Lines | 4 |
MTTX
| TTX Company | 7 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 9 |
OTTX
| TTX Company | 3 |
PTTX
| TTX Company | 24 |
QTTX
| TTX Company | 38 |
RAIX
| Union Carbide Corporation | 1 |
RTTX
| TTX Company | 1 |
SBD
| Seaboard System | 2 |
TTCX
| TTX Company | 2 |
UP
| Union Pacific Railroad Company | 3 |
VTTX
| TTX Company | 2 |
WC
| Wisconsin Central | 1 |
XTTX
| TTX Company | 1 |