ABOX
| TTX Company | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
ATW
| Atlantic and Western | 1 |
BKTY
| Union Pacific Railroad Company | 1 |
BNSF
| BNSF Railway | 14 |
CIC
| Cedar Rapids & Iowa City | 1 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 2 |
CRLE
| Coe Rail Incorporated | 2 |
CSX
| CSX Railroad | 3 |
DODX
| Department Of Defense | 1 |
DWC
| Canadian National Railways | 2 |
GTW
| Grand Trunk Western | 2 |
HPJX
| Helm-Pacific Leasing | 1 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 2 |
KCS
| Kansas City Southern | 2 |
KCSM
| Kansas City Southern De Mexico | 1 |
LRS
| Laurinburg and Southern | 6 |
LVRR
| Lycoming Valley | 1 |
MB
| Meridian & Bigbee | 2 |
MRL
| Montana Rail Link | 4 |
MTNR
| Mississippi Tennessee Railroad LLC | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 4 |
RBOX
| Railbox Company | 4 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 2 |
TR
| Tomahawk Railway L.P. | 1 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 2 |