AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BCOL
| Canadian National Railways | 2 |
COER
| Crab Orchard & Egyptian | 5 |
CSX
| CSX Railroad | 1 |
FP
| Fordyce & Princeton Railroad Company | 5 |
GTW
| Grand Trunk Western | 2 |
HS
| H and S Railroad Company | 5 |
IC
| Illinois Central | 7 |
KCS
| Kansas City Southern | 6 |
KCSM
| Kansas City Southern De Mexico | 1 |
MNA
| Missouri and Northern Arkansas | 1 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 4 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
SP
| Southern Pacific | 4 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
WRWK
| Providence & Worchester Railroad | 1 |