ATW
| Atlantic and Western | 7 |
BNSF
| BNSF Railway | 2 |
GMRC
| Green Mountain RR | 1 |
HS
| H and S Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 2 |
LRS
| Laurinburg and Southern | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 6 |
QC
| Quebec Central | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 2 |
WRWK
| Providence & Worchester Railroad | 1 |