ABOX
| TTX Company | 4 |
ALM
| Arkansas Louisiana and Mississippi Railr | 6 |
AOK
| Arkansas-Oklahoma Railroad | 4 |
ATW
| Atlantic and Western | 8 |
BB
| Buckingham Branch | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 2 |
CCR
| Corinth & Counce | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CIRR
| Chattahoochee Industrial Railroad | 2 |
CKIX
| C.K. Industries | 1 |
CN
| Canadian National Railways | 2 |
CSX
| CSX Railroad | 33 |
CVC
| Canadian National Railways | 1 |
FBOX
| TTX Company | 5 |
FCRD
| First Coast Railway | 2 |
GFRR
| Georgia and Florida Railnet | 1 |
GNRR
| Georgia Northeastern | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTW
| Grand Trunk Western | 1 |
GVSR
| Galveston Railroad L.P. | 2 |
HS
| H and S Railroad Company | 2 |
IBT
| International Bridge and Terminal Company | 3 |
KCS
| Kansas City Southern | 8 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MP
| Missouri Pacific | 1 |
NOKL
| Northwestern Oklahoma | 2 |
NS
| Norfolk Southern | 4 |
NYC
| New York Central | 1 |
RBOX
| Railbox Company | 7 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 1 |
TR
| Tomahawk Railway L.P. | 1 |
VR
| Valdosta Railway | 3 |