AOK
| Arkansas-Oklahoma Railroad | 1 |
BCOL
| Canadian National Railways | 2 |
BNSF
| BNSF Railway | 1 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 42 |
CSX
| CSX Railroad | 1 |
FP
| Fordyce & Princeton Railroad Company | 2 |
GTW
| Grand Trunk Western | 17 |
HLMX
| Helm Financial Corporation | 1 |
HPJX
| Helm-Pacific Leasing | 3 |
HS
| H and S Railroad Company | 2 |
IBT
| International Bridge and Terminal Company | 1 |
MB
| Meridian & Bigbee | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MILW
| Milwaukee Road | 1 |
MP
| Missouri Pacific | 13 |
MSRC
| Kansas City Southern | 1 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 6 |
PSMX
| Esco Corporation | 1 |
SOU
| Southern | 3 |