AGR
| Alabama and Gulf Coast | 1 |
CNW
| Chicago & Northwestern | 1 |
CR
| Conrail | 3 |
CSX
| CSX Railroad | 2 |
CV
| Central Vermont | 2 |
DRGW
| Denver & Rio Grande Western | 2 |
GTW
| Grand Trunk Western | 1 |
LRS
| Laurinburg and Southern | 1 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 4 |
NYC
| New York Central | 2 |
PC
| Penn Central | 5 |
PSMX
| Esco Corporation | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 6 |
SRNJ
| Southern Railroad Company of New Jersey | 1 |
TRMX
| The Railroad Museum-TRM Industries | 1 |