BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 11 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 6 |
CR
| Conrail | 1 |
CSS
| Chicago South Shore And South Bend | 8 |
CSX
| CSX Railroad | 9 |
EJE
| Elgin Joliet and Eastern | 1 |
GRW
| Gary Railway | 2 |
IANR
| Iowa Northern Ry | 1 |
ICE
| Iowa Chicago and Eastern | 1 |
IHB
| Indiana Harbor Belt | 5 |
LW
| Louisville and Wadley Railway Company | 1 |
NOKL
| Northwestern Oklahoma | 2 |
NS
| Norfolk Southern | 8 |
NSAX
| National Steel Corporation | 1 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 2 |
SOO
| Soo Line | 1 |
SOU
| Southern | 1 |
UP
| Union Pacific Railroad Company | 2 |