ABOX
| TTX Company | 1 |
ALAB
| Alabama Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 4 |
AZER
| Arizona Eastern Railway Company | 3 |
BCOL
| Canadian National Railways | 1 |
BKTY
| Union Pacific Railroad Company | 2 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 1 |
CN
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 1 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
FSRR
| FerroSur | 2 |
FXE
| Ferromex | 2 |
GTRA
| Golden Triangle Railroad | 1 |
GTW
| Grand Trunk Western | 2 |
HS
| H and S Railroad Company | 3 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 1 |
LRS
| Laurinburg and Southern | 2 |
MP
| Missouri Pacific | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 1 |
RBOX
| Railbox Company | 1 |
SLR
| St Lawrence & Atlantic | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 3 |
SRN
| Sabine River & Northern | 8 |
TBOX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 1 |
WC
| Wisconsin Central | 2 |
WRWK
| Providence & Worchester Railroad | 1 |