ALY
| Allegheny and Eastern Railroad Incorpora | 2 |
APPX
| Appalachian Railcar Services | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 9 |
BPRR
| Buffalo and Pittsburgh | 17 |
CSX
| CSX Railroad | 2 |
CW
| Colorado and Wyoming | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
IC
| Illinois Central | 2 |
ICE
| Iowa Chicago and Eastern | 1 |
ICG
| Illinois Central Gulf | 3 |
IFRX
| Infinity Rail LLC | 24 |
IHB
| Indiana Harbor Belt | 1 |
JTSX
| Joseph Transportation Incorporated | 6 |
KXHR
| Knoxville & Holston River RR | 2 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
MMA
| Montreal, Maine & Atlantic | 1 |
NOKL
| Northwestern Oklahoma | 2 |
NS
| Norfolk Southern | 3 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 1 |
SBD
| Seaboard System | 1 |
SH
| Steelton and Highspire Railroad Company | 4 |
SOU
| Southern | 5 |
TCE
| TCE | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TTJX
| TTX Company-Bulkhead Flats | 5 |
TTPX
| TTX Company - Bulkhead Flats | 33 |
UMP
| Upper Merion and Plymouth Railroad | 1 |
UP
| Union Pacific Railroad Company | 1 |
WCTR
| WCTU Company White City Terminal Railway | 12 |