BLE
| Bessemer & Lake Erie | 2 |
BO
| Baltimore & Ohio | 4 |
CR
| Conrail | 8 |
CSL
| Chicago Short Line Railway Company | 1 |
CSS
| Chicago South Shore And South Bend | 4 |
CSX
| CSX Railroad | 15 |
DODX
| Department Of Defense | 2 |
EJE
| Elgin Joliet and Eastern | 7 |
EL
| Erie Lackawanna | 1 |
IAIS
| Iowa Interstate | 3 |
IC
| Illinois Central | 1 |
IHB
| Indiana Harbor Belt | 12 |
ISCX
| ISC Incorporated | 1 |
LN
| Louisville & Nashville | 3 |
MILW
| Milwaukee Road | 1 |
NKP
| Nickel Plate | 1 |
NS
| Norfolk Southern | 4 |
SCIH
| South Chicago & Indiana Harbor Railway C | 3 |
SCL
| Seaboard Coast Line | 1 |