ATW
| Atlantic and Western | 2 |
BCOL
| Canadian National Railways | 3 |
BNSF
| BNSF Railway | 7 |
CMQ
| CENTRAL MAINE & QUEBEC RAILWAY | 1 |
CN
| Canadian National Railways | 6 |
COER
| Crab Orchard & Egyptian | 3 |
CSX
| CSX Railroad | 1 |
CW
| Colorado and Wyoming | 2 |
EAMX
| Everest Railcar Services, Inc | 1 |
HPJX
| Helm-Pacific Leasing | 3 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 11 |
ICG
| Illinois Central Gulf | 24 |
LN
| Louisville & Nashville | 1 |
LRS
| Laurinburg and Southern | 1 |
NS
| Norfolk Southern | 4 |
PRMX
| PRMX | 1 |
RTAX
| RTAX | 1 |
SBD
| Seaboard System | 1 |
SOU
| Southern | 6 |
SP
| Southern Pacific | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 20 |
TTJX
| TTX Company-Bulkhead Flats | 6 |
TTPX
| TTX Company - Bulkhead Flats | 16 |
UP
| Union Pacific Railroad Company | 5 |
WC
| Wisconsin Central | 6 |