ARR
| Alaska Railroad | 1 |
ARZC
| Arizona and California Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 8 |
ATTX
| TTX Company - Container Flats | 2 |
BAR
| Bangor & Aroostook | 1 |
BCOL
| Canadian National Railways | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 3 |
CG
| Central Of Georgia | 1 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 6 |
DODX
| Department Of Defense | 20 |
ERES
| Erie Western | 1 |
GEX
| General Electric Company | 1 |
GMO
| Gulf Mobile & Ohio | 1 |
GVSR
| Galveston Railroad L.P. | 1 |
HTTX
| TTX Company | 3 |
HZGX
| Herzog Contracting Corporation | 5 |
IC
| Illinois Central | 1 |
ICE
| Iowa Chicago and Eastern | 3 |
ICG
| Illinois Central Gulf | 2 |
ITTX
| TTX Company | 7 |
JTTX
| TTX Company | 2 |
KTTX
| TTX Company | 1 |
KWUX
| Siemens Power Corporation | 2 |
LN
| Louisville & Nashville | 1 |
MP
| Missouri Pacific | 1 |
MTTX
| TTX Company | 1 |
NDEM
| NDEM | 1 |
NP
| Northern Pacific | 5 |
NYC
| New York Central | 1 |
OCE
| Oregon California & Eastern | 2 |
OTTX
| TTX Company | 1 |
PRR
| Pennsylvania Railroad | 1 |
QTTX
| TTX Company | 2 |
SBC
| Ferrocarril Sonora Baja California | 2 |
SCAX
| SOUTHERN CALIFORNIA REGIONAL RAIL AUTHORITY | 2 |
SOO
| Soo Line | 1 |
SP
| Southern Pacific | 8 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 6 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TTDX
| TTX Company - DOD Service Flats | 1 |
TTEX
| TTX Company - Articulated Flat Cars (TOFC/COFC) | 1 |
TTWX
| TTX Company | 1 |
TTX
| TTX Company | 3 |
UP
| Union Pacific Railroad Company | 3 |
WPRR
| Willamette and Pacific | 1 |
WTCX
| Weyerhauser | 1 |
XTTX
| TTX Company | 1 |