AC
| Algoma Central | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 1 |
BO
| Baltimore & Ohio | 1 |
CNW
| Chicago & Northwestern | 2 |
CP
| Canadian Pacific Railway | 1 |
CSS
| Chicago South Shore And South Bend | 1 |
DMIR
| Duluth Missabe & Iron Range | 1 |
DRGW
| Denver & Rio Grande Western | 2 |
DTI
| Detroit Toledo & Ironton | 1 |
GACX
| General American Marks Company | 1 |
GBW
| Green Bay & Western | 1 |
GN
| Great Northern | 1 |
GSNX
| Helm Financial Corporation | 1 |
IC
| Illinois Central | 1 |
ICE
| Iowa Chicago and Eastern | 2 |
ICG
| Illinois Central Gulf | 1 |
MWCX
| Midwest Railcar Corporation | 2 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 2 |
SBTX
| FIRST UNION RAIL | 2 |
SLSF
| Saint Louis-San Francisco | 2 |
SOO
| Soo Line | 1 |
SOU
| Southern | 2 |
SPSX
| Progress Rail Services Corp | 1 |
WC
| Wisconsin Central | 5 |
WSOR
| Wisconsin & Southern | 1 |