ABOX
| TTX Company | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BKTY
| Union Pacific Railroad Company | 1 |
BM
| Boston & Maine | 1 |
BNSF
| BNSF Railway | 2 |
CMHX
| CarMath Incorporated | 1 |
CN
| Canadian National Railways | 4 |
CNJ
| Central Rail Road of New Jersey | 1 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 2 |
CSX
| CSX Railroad | 3 |
DH
| Delaware & Hudson | 1 |
DL
| Delaware-Lackawanna Railroad Company | 1 |
EEC
| East Erie Commercial Railroad | 1 |
FBOX
| TTX Company | 2 |
FSRR
| FerroSur | 2 |
FXE
| Ferromex | 1 |
MEC
| Maine Central | 3 |
NYC
| New York Central | 2 |
RGS
| Rio Grande Southern | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBCX
| Boeing Company | 1 |
TBOX
| TTX Company | 2 |
UP
| Union Pacific Railroad Company | 1 |
YKR
| York Rail | 2 |