ATSF
| Atchison Topeka & Santa Fe | 4 |
CNA
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 5 |
CR
| Conrail | 10 |
CSX
| CSX Railroad | 25 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTW
| Grand Trunk Western | 11 |
GVSR
| Galveston Railroad L.P. | 1 |
ICG
| Illinois Central Gulf | 3 |
MP
| Missouri Pacific | 23 |
NS
| Norfolk Southern | 48 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 24 |
SOU
| Southern | 5 |
SP
| Southern Pacific | 5 |
SSW
| St Louis Southwestern (Cotton Belt) | 8 |
UP
| Union Pacific Railroad Company | 9 |
WP
| Western Pacific | 6 |