BCOL
| Canadian National Railways | 4 |
CN
| Canadian National Railways | 8 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 16 |
IC
| Illinois Central | 2 |
ICG
| Illinois Central Gulf | 1 |
NS
| Norfolk Southern | 20 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 3 |
SOU
| Southern | 6 |
SP
| Southern Pacific | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
UP
| Union Pacific Railroad Company | 1 |