AGR
| Alabama and Gulf Coast | 2 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
BAR
| Bangor & Aroostook | 1 |
BCOL
| Canadian National Railways | 1 |
BN
| Burlington Northern | 1 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CNIS
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 3 |
CSX
| CSX Railroad | 5 |
GMRC
| Green Mountain RR | 1 |
GTW
| Grand Trunk Western | 2 |
MEC
| Maine Central | 4 |
MWCX
| Midwest Railcar Corporation | 1 |
NS
| Norfolk Southern | 2 |
NYC
| New York Central | 1 |
RBOX
| Railbox Company | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |