AM
| Arkansas & Missouri | 4 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 1 |
FSR
| Fort Smith Railroad Company | 1 |
GVSR
| Galveston Railroad L.P. | 2 |
LRS
| Laurinburg and Southern | 1 |
MR
| McCloud Railway Company | 1 |
NOKL
| Northwestern Oklahoma | 7 |
NS
| Norfolk Southern | 12 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 22 |
SRN
| Sabine River & Northern | 16 |
SSW
| St Louis Southwestern (Cotton Belt) | 12 |
TOE
| Texas Oklahoma and Eastern RR Company | 8 |
TSBY
| Great Lakes Central Railroad | 1 |
WCTR
| WCTU Company White City Terminal Railway | 3 |
WP
| Western Pacific | 29 |
WRWK
| Providence & Worchester Railroad | 7 |