BN
| Burlington Northern | 5 |
BO
| Baltimore & Ohio | 1 |
CO
| Chesapeake & Ohio | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
ICG
| Illinois Central Gulf | 1 |
LPN
| Longview, Portland & Northern | 2 |
NS
| Norfolk Southern | 3 |
ONW
| Oregon & Northwestern | 1 |
OPE
| Oregon Pacific & Eastern | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
WGRR
| WGRR | 1 |