AEQX
| ATEL Equipment Corporation | 2 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATTX
| TTX Company - Container Flats | 1 |
ATW
| Atlantic and Western | 1 |
AWXX
| East Carbon development Company | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 5 |
BTCX
| Browner Turnout Company | 3 |
BVRY
| Brandywine Valley Railroad Company | 1 |
CN
| Canadian National Railways | 10 |
CO
| Chesapeake & Ohio | 1 |
CP
| Canadian Pacific Railway | 13 |
CSX
| CSX Railroad | 16 |
CW
| Colorado and Wyoming | 8 |
DODX
| Department Of Defense | 11 |
FEC
| Florida East Coast | 6 |
FRR
| Falls Road Railroad Company Incorporated | 3 |
FTSX
| Fairmont Tamper | 1 |
FTTX
| TTX Company | 1 |
FURX
| First Union Rail | 1 |
GBRX
| Greenbrier Leasing Corporation | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 10 |
GZSX
| GZSX | 1 |
HTTX
| TTX Company | 6 |
IC
| Illinois Central | 7 |
ICE
| Iowa Chicago and Eastern | 1 |
ITTX
| TTX Company | 6 |
JTSX
| Joseph Transportation Incorporated | 1 |
JTTX
| TTX Company | 2 |
KCS
| Kansas City Southern | 1 |
KRL
| Kasgro Rail Lines | 13 |
LBR
| Lowville and Beaver River Railroad Compa | 13 |
LHFX
| Lehigh Heavy Forge Corporation | 4 |
LTTX
| TTX Company | 4 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 3 |
MRL
| Montana Rail Link | 2 |
MRMX
| Midwest Railcar Corporation | 1 |
MTTX
| TTX Company | 2 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 3 |
OTTX
| TTX Company | 4 |
PTTX
| TTX Company | 10 |
QTTX
| TTX Company | 29 |
QUAX
| Redstreak, LLC | 3 |
RTTX
| TTX Company | 1 |
SBD
| Seaboard System | 3 |
SIIX
| Siemens Industry Inc | 1 |
SJTX
| Stella Jones, Inc | 2 |
SOO
| Soo Line | 5 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 1 |
SPSX
| Progress Rail Services Corp | 3 |
TBCX
| Boeing Company | 1 |
TEXX
| TEXX | 1 |
TFM
| Kansas City Southern De Mexico | 1 |
TFWX
| TTX COMPANY | 1 |
TPDX
| TPDX | 6 |
TTHX
| TTX Company - Flat Cars | 1 |
TTMX
| TTX Company | 1 |
TZPR
| Tazewell & Peoria Railroad | 4 |
UP
| Union Pacific Railroad Company | 4 |
USWX
| USA Waste Services Incorporated | 2 |
WC
| Wisconsin Central | 2 |
XTTX
| TTX Company | 5 |