BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 3 |
CIC
| Cedar Rapids & Iowa City | 1 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 1 |
CSX
| CSX Railroad | 4 |
DWC
| Canadian National Railways | 3 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
FBOX
| TTX Company | 1 |
HS
| H and S Railroad Company | 1 |
KCS
| Kansas City Southern | 2 |
KWT
| KWT Railway | 1 |
MP
| Missouri Pacific | 1 |
NS
| Norfolk Southern | 1 |
NYC
| New York Central | 1 |
PGR
| Progressive Rail, Inc | 1 |
RBOX
| Railbox Company | 2 |
SLC
| San Luis Central Railroad Company | 1 |
SOO
| Soo Line | 1 |
TBOX
| TTX Company | 1 |
WCCL
| Wisconsin Central | 1 |