BO
| Baltimore & Ohio |
|
0
|
2
| BO |
NW
| Norfolk & Western |
|
0
|
2
| NW |
PC
| Penn Central |
|
0
|
1
| PC |
PRR
| Pennsylvania Railroad |
|
2
|
0
| PRR |
RFP
| Richmond Fredericksburg & Potomac |
|
0
|
2
| RFP |
SOO
| Soo Line |
|
0
|
1
| SOO |
SOU
| Southern |
|
0
|
1
| SOU |
SP
| Southern Pacific |
|
0
|
1
| SP |
SSW
| St Louis Southwestern (Cotton Belt) |
|
0
|
1
| SSW |
WM
| Western Maryland |
|
1
|
0
| WM |