BM
| Boston & Maine | 2 |
CN
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 1 |
CR
| Conrail | 1 |
GNBC
| Grainbelt Corporation | 1 |
HLMX
| Helm Financial Corporation | 1 |
NYC
| New York Central | 2 |
PC
| Penn Central | 3 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |