ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 4 |
BO
| Baltimore & Ohio | 1 |
BOCT
| CSX Transportation (Baltimore & Ohio Chicago Terminal Railro | 3 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 2 |
CO
| Chesapeake & Ohio | 7 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 3 |
CRIP
| Chicago Rock Island & Pacific | 1 |
CSDX
| Metropolitan Water Reclamation District of Greater Chicago | 1 |
CSS
| Chicago South Shore And South Bend | 1 |
CSX
| CSX Railroad | 1 |
EJE
| Elgin Joliet and Eastern | 2 |
EL
| Erie Lackawanna | 1 |
FWX
| FWX | 1 |
GTW
| Grand Trunk Western | 6 |
HABX
| Habco International Incorporated | 2 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 5 |
IHB
| Indiana Harbor Belt | 7 |
LN
| Louisville & Nashville | 3 |
METX
| METRA | 1 |
MILW
| Milwaukee Road | 4 |
MKT
| Missouri-Kansas-Texas | 2 |
NW
| Norfolk & Western | 6 |
NYC
| New York Central | 1 |
PC
| Penn Central | 2 |
RI
| RI | 1 |
SOO
| Soo Line | 1 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
SRGX
| SRGX | 2 |
SSVX
| SSI Industries (M of Way Cars) | 1 |
TPW
| Toledo Peoria & Western | 1 |
UP
| Union Pacific Railroad Company | 1 |
WISX
| Wisconsin Power and Light Company | 1 |