ATSF
| Atchison Topeka & Santa Fe | 4 |
BNSF
| BNSF Railway | 15 |
CNW
| Chicago & Northwestern | 29 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 3 |
EJE
| Elgin Joliet and Eastern | 3 |
GRW
| Gary Railway | 10 |
GTW
| Grand Trunk Western | 5 |
MKT
| Missouri-Kansas-Texas | 6 |
MP
| Missouri Pacific | 22 |
NS
| Norfolk Southern | 9 |
NSAX
| National Steel Corporation | 1 |
NW
| Norfolk & Western | 14 |
NYC
| New York Central | 3 |
UP
| Union Pacific Railroad Company | 34 |