AKMD
| Arkansas Midland Railroad Company | 23 |
AM
| Arkansas & Missouri | 1 |
AMEX
| Allied Enterprises | 1 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
BAEX
| Andersons | 8 |
BO
| Baltimore & Ohio | 1 |
BR
| Buffalo and Pittsburgh | 15 |
CNA
| Canadian National Railways | 6 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 1 |
CPAA
| Canadian Pacific Railway | 11 |
CR
| Conrail | 23 |
CSX
| CSX Railroad | 35 |
DTS
| Detroit & Toledo ShoreLine | 1 |
GTW
| Grand Trunk Western | 11 |
HLMX
| Helm Financial Corporation | 13 |
ICG
| Illinois Central Gulf | 1 |
MP
| Missouri Pacific | 1 |
MWCX
| Midwest Railcar Corporation | 2 |
NOKL
| Northwestern Oklahoma | 6 |
NS
| Norfolk Southern | 22 |
NW
| Norfolk & Western | 13 |
NYC
| New York Central | 58 |
PSMX
| Esco Corporation | 4 |
SIRX
| Southern Illinois Railcar Company | 3 |
SOU
| Southern | 13 |
SP
| Southern Pacific | 59 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
STMA
| St. Maries River Railroad Company | 8 |
TFM
| Kansas City Southern De Mexico | 7 |
TR
| Tomahawk Railway L.P. | 7 |
UP
| Union Pacific Railroad Company | 2 |