ABS
| Alabama Southern Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ATW
| Atlantic and Western | 27 |
AWXX
| East Carbon development Company | 7 |
BNSF
| BNSF Railway | 1 |
BPRR
| Buffalo and Pittsburgh | 2 |
BTCX
| Browner Turnout Company | 6 |
BVRY
| Brandywine Valley Railroad Company | 12 |
CANX
| CANAC International | 5 |
CO
| Chesapeake & Ohio | 1 |
COER
| Crab Orchard & Egyptian | 1 |
COVX
| COVANTA SUSTAINABLE SOLUTIONS LLC | 2 |
CP
| Canadian Pacific Railway | 4 |
CSX
| CSX Railroad | 44 |
DJTX
| Joseph Transportation Incorporated | 3 |
DODX
| Department Of Defense | 12 |
DSEX
| East Carbon Development Company | 2 |
ECXX
| East Carbon Development Company | 1 |
EV
| Everett Railroad | 1 |
FEC
| Florida East Coast | 22 |
FICX
| Frontier Industrial Corp | 2 |
FRR
| Falls Road Railroad Company Incorporated | 4 |
FTSX
| Fairmont Tamper | 7 |
FTTX
| TTX Company | 5 |
GBRX
| Greenbrier Leasing Corporation | 9 |
GIMX
| General American Marks Company | 7 |
GTTX
| TTX Company - Flat Cars | 1 |
GTW
| Grand Trunk Western | 1 |
GVSR
| Galveston Railroad L.P. | 1 |
HESX
| Heritage Environmental Services | 3 |
HTTX
| TTX Company | 7 |
IATR
| Iowa Traction Railroad Company | 1 |
ITTX
| TTX Company | 11 |
JTTX
| TTX Company | 4 |
KCS
| Kansas City Southern | 1 |
KRL
| Kasgro Rail Lines | 8 |
LBR
| Lowville and Beaver River Railroad Compa | 7 |
LHFX
| Lehigh Heavy Forge Corporation | 2 |
LMIC
| Lake Michigan & Indiana Railroad | 4 |
LTTX
| TTX Company | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 2 |
MTTX
| TTX Company | 15 |
NOKL
| Northwestern Oklahoma | 17 |
NS
| Norfolk Southern | 26 |
NW
| Norfolk & Western | 9 |
OTTX
| TTX Company | 17 |
PTTX
| TTX Company | 36 |
QTTX
| TTX Company | 25 |
QUAX
| Redstreak, LLC | 6 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
RSGX
| RSGX | 10 |
RTTX
| TTX Company | 21 |
SBD
| Seaboard System | 4 |
SOU
| Southern | 18 |
SPSX
| Progress Rail Services Corp | 5 |
TFWX
| TTX COMPANY | 3 |
TTDX
| TTX Company - DOD Service Flats | 1 |
TTEX
| TTX Company - Articulated Flat Cars (TOFC/COFC) | 24 |
TTHX
| TTX Company - Flat Cars | 14 |
TTJX
| TTX Company-Bulkhead Flats | 2 |
TTMX
| TTX Company | 2 |
TTOX
| TTX Company | 1 |
TTX
| TTX Company | 1 |
TTXX
| TTX Company | 3 |
UMP
| Upper Merion and Plymouth Railroad | 2 |
USWX
| USA Waste Services Incorporated | 55 |
WC
| Wisconsin Central | 2 |
WCTR
| WCTU Company White City Terminal Railway | 2 |
WE
| Wheeling & Lake Erie | 1 |
WP
| Western Pacific | 1 |
XTTX
| TTX Company | 5 |
YARR
| Youngstown and Austintown Railroad | 1 |