CPOX
| Consumers Power Company (Mich.) | 1 |
GMO
| Gulf Mobile & Ohio | 1 |
IC
| Illinois Central | 6 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 3 |
LN
| Louisville & Nashville | 2 |
MNA
| Missouri and Northern Arkansas | 1 |
SP
| Southern Pacific | 7 |
UP
| Union Pacific Railroad Company | 3 |