AC
| Algoma Central | 2 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 3 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CNIS
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 2 |
CRLE
| Coe Rail Incorporated | 1 |
CW
| Colorado and Wyoming | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
DWC
| Canadian National Railways | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
GVSR
| Galveston Railroad L.P. | 10 |
ICG
| Illinois Central Gulf | 2 |
LN
| Louisville & Nashville | 1 |
LPN
| Longview, Portland & Northern | 1 |
LRWN
| Little Rock & Western | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 2 |
MILW
| Milwaukee Road | 1 |
MSRC
| Kansas City Southern | 2 |
MSV
| Mississippi and Skuna Valley Railroad Co | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
TTJX
| TTX Company-Bulkhead Flats | 1 |
UP
| Union Pacific Railroad Company | 6 |
WCRC
| Washington Central | 1 |