AMTK
| Amtrak | 4 |
ATTX
| TTX Company - Container Flats | 1 |
ATW
| Atlantic and Western | 1 |
AWXX
| East Carbon development Company | 2 |
BAR
| Bangor & Aroostook | 3 |
BM
| Boston & Maine | 1 |
BNSF
| BNSF Railway | 4 |
CCKX
| CCKX Incorporated | 1 |
CCRX
| Cape Cod Railroad | 1 |
CSX
| CSX Railroad | 13 |
DODX
| Department Of Defense | 2 |
DSEX
| East Carbon Development Company | 7 |
DSRX
| Downeast Scenic | 3 |
DSWX
| DSWX | 1 |
ESHR
| Eastern Shore Railroad | 1 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
GBRX
| Greenbrier Leasing Corporation | 2 |
GIMX
| General American Marks Company | 4 |
HPAX
| International Paper Company | 2 |
HTTX
| TTX Company | 12 |
IPCX
| International Paper Company | 2 |
ITTX
| TTX Company | 4 |
JTSX
| Joseph Transportation Incorporated | 3 |
KRL
| Kasgro Rail Lines | 9 |
LBR
| Lowville and Beaver River Railroad Compa | 2 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
MEC
| Maine Central | 1 |
MRSL
| MRS Logistica | 1 |
MTTX
| TTX Company | 1 |
NYC
| New York Central | 1 |
OTTX
| TTX Company | 3 |
PTM
| Portland Terminal | 2 |
PTTX
| TTX Company | 14 |
QTTX
| TTX Company | 4 |
SBD
| Seaboard System | 1 |
SMW
| St Marys Railway West LLC | 1 |
SOU
| Southern | 3 |
SPSX
| Progress Rail Services Corp | 4 |
TTHX
| TTX Company - Flat Cars | 1 |
TTMX
| TTX Company | 2 |
TZPR
| Tazewell & Peoria Railroad | 1 |
UP
| Union Pacific Railroad Company | 1 |
USWX
| USA Waste Services Incorporated | 12 |
WSRR
| WSRR | 2 |
XTTX
| TTX Company | 4 |