ATSF
| Atchison Topeka & Santa Fe | 2 |
BN
| Burlington Northern | 1 |
BSCX
| Bethlehem Steel Corporation | 1 |
CRLE
| Coe Rail Incorporated | 1 |
CW
| Colorado and Wyoming | 1 |
MARX
| MidAmerican Energy Corporation | 1 |
NSTX
| Consumers Energy Company | 1 |
PBR
| Patapsco and Back Rivers Railroad | 1 |
PC
| Penn Central | 1 |
RDG
| Reading Railroad | 1 |
UFIX
| NRG Energy | 2 |