BO
| Baltimore & Ohio | 1 |
CO
| Chesapeake & Ohio | 3 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 2 |
EBT
| East Broad Top | 1 |
LEFC
| Lake Erie, Franklin & Claron | 2 |
MGA
| Monongahela RR | 1 |
NKP
| Nickel Plate | 1 |
NS
| Norfolk Southern | 4 |
NW
| Norfolk & Western | 1 |
PRR
| Pennsylvania Railroad | 1 |
PS
| Pittsburg and Shawmut Railroad Company | 1 |
SOO
| Soo Line | 1 |
URR
| Union Railroad | 1 |
WNYP
| Western New York and Pennsylvania | 1 |