AOK
| Arkansas-Oklahoma Railroad | 1 |
ATW
| Atlantic and Western | 1 |
CNA
| Canadian National Railways | 1 |
CSX
| CSX Railroad | 2 |
DME
| Dakota, Minnesota and Eastern | 1 |
DWC
| Canadian National Railways | 1 |
FCRD
| First Coast Railway | 1 |
HS
| H and S Railroad Company | 1 |
KCS
| Kansas City Southern | 2 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
TBOX
| TTX Company | 2 |
WSOR
| Wisconsin & Southern | 1 |