BN
| Burlington Northern | 3 |
CO
| Chesapeake & Ohio | 1 |
CRR
| Clinchfield | 1 |
CSX
| CSX Railroad | 5 |
HB
| Hampton and Branchville | 5 |
NHVR
| New Hope Valley Railroad | 2 |
NS
| Norfolk Southern | 1 |
PBR
| Patapsco and Back Rivers Railroad | 2 |
ROAD
| ROAD | 1 |
SCRM
| SCRM | 1 |
SRS
| Sperry Rail Service | 1 |
TM
| Texas-Mexican | 1 |
WM
| Western Maryland | 2 |