|
BN
| Burlington Northern | 1 |
|
BO
| Baltimore & Ohio | 3 |
|
CN
| Canadian National Railways | 1 |
|
CNJ
| Central Rail Road of New Jersey | 3 |
|
CO
| Chesapeake & Ohio | 4 |
|
CR
| Conrail | 1 |
|
CV
| Central Vermont | 3 |
|
ICG
| Illinois Central Gulf | 1 |
|
LSMS
| Lake Shore Michigan Southern Railroad | 1 |
|
MILW
| Milwaukee Road | 3 |
|
NS
| Norfolk Southern | 4 |
|
NW
| Norfolk & Western | 3 |
|
PRR
| Pennsylvania Railroad | 3 |
|
SL
| Salt Lake Southern RR | 1 |
|
SOU
| Southern | 2 |
|
UP
| Union Pacific Railroad Company | 3 |
|
WM
| Western Maryland | 2 |
