AMTK
| Amtrak | 1 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
BN
| Burlington Northern | 4 |
BNSF
| BNSF Railway | 1 |
BO
| Baltimore & Ohio | 2 |
BRW
| Black River And Western | 1 |
CBQ
| Chicago Burlington & Quincy | 10 |
CGW
| Chicago Great Western | 1 |
CNJ
| Central Rail Road of New Jersey | 1 |
CNW
| Chicago & Northwestern | 4 |
CR
| Conrail | 1 |
CSS
| Chicago South Shore And South Bend | 1 |
CTS
| Cumbres & Toltec Scenic | 1 |
CWEX
| Midwest Generation LLC | 1 |
CWI
| Chicago and Western Indiana | 1 |
DRG
| DRG | 1 |
DRGW
| Denver & Rio Grande Western | 50 |
DSL
| Denver & Salt Lake | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
FWX
| FWX | 1 |
GLRX
| Georgetown Loop Railroad Incorporated | 4 |
IC
| Illinois Central | 3 |
MON
| Monon Route | 1 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 1 |
PRR
| Pennsylvania Railroad | 1 |
RGS
| Rio Grande Southern | 3 |
SOO
| Soo Line | 4 |
SP
| Southern Pacific | 5 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
SRGX
| SRGX | 1 |
UP
| Union Pacific Railroad Company | 9 |