BO
| Baltimore & Ohio | 1 |
CRR
| Clinchfield | 1 |
CSX
| CSX Railroad | 2 |
EJE
| Elgin Joliet and Eastern | 1 |
GA
| Georgia Railroad | 1 |
IAIS
| Iowa Interstate | 1 |
IHB
| Indiana Harbor Belt | 5 |
SCIH
| South Chicago & Indiana Harbor Railway C | 1 |
SCL
| Seaboard Coast Line | 3 |
SOU
| Southern | 1 |
UP
| Union Pacific Railroad Company | 1 |