CNW
| Chicago & Northwestern | 1 |
CR
| Conrail | 3 |
CSS
| Chicago South Shore And South Bend | 1 |
EJE
| Elgin Joliet and Eastern | 2 |
IHB
| Indiana Harbor Belt | 1 |
MP
| Missouri Pacific | 1 |
NS
| Norfolk Southern | 7 |
NSAX
| National Steel Corporation | 1 |
NW
| Norfolk & Western | 7 |
SP
| Southern Pacific | 3 |
UP
| Union Pacific Railroad Company | 3 |