BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 3 |
CNW
| Chicago & Northwestern | 4 |
CR
| Conrail | 4 |
CSX
| CSX Railroad | 4 |
FURX
| First Union Rail | 1 |
GRW
| Gary Railway | 12 |
GTW
| Grand Trunk Western | 1 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 3 |
NS
| Norfolk Southern | 11 |
NW
| Norfolk & Western | 18 |
NYC
| New York Central | 7 |
UP
| Union Pacific Railroad Company | 1 |