CNA
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 2 |
CSX
| CSX Railroad | 2 |
GTW
| Grand Trunk Western | 6 |
ICG
| Illinois Central Gulf | 1 |
MP
| Missouri Pacific | 2 |
NS
| Norfolk Southern | 3 |
NYC
| New York Central | 5 |
SOU
| Southern | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |