AA
| Ann Arbor | 2 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
BNSF
| BNSF Railway | 1 |
CNA
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 1 |
CV
| Central Vermont | 1 |
DRGW
| Denver & Rio Grande Western | 1 |
HLMX
| Helm Financial Corporation | 1 |
HPJX
| Helm-Pacific Leasing | 1 |
MMA
| Montreal, Maine & Atlantic | 1 |
MMRR
| Mid-Michigan Railroad Incorporated | 2 |
MQT
| Marquette Rail | 3 |
NADX
| General Electric Rail Services | 1 |
NYC
| New York Central | 1 |
PDRR
| Pee Dee River RR | 1 |
PM
| Pere Marquette | 4 |
RBOX
| Railbox Company | 1 |
SLGG
| Progress Rail Services Corporation | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 1 |
WAB
| Wabash | 2 |
WCCL
| Wisconsin Central | 2 |