AERC
| Albany and Eastern Railroad Company | 1 |
AGR
| Alabama and Gulf Coast | 2 |
ALAB
| Alabama Railroad | 1 |
ANR
| Angelina and Neches River Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 1 |
BCOL
| Canadian National Railways | 2 |
BKTY
| Union Pacific Railroad Company | 2 |
BM
| Boston & Maine | 2 |
BN
| Burlington Northern | 7 |
BNSF
| BNSF Railway | 9 |
CIC
| Cedar Rapids & Iowa City | 4 |
CMHX
| CarMath Incorporated | 6 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 2 |
CNIS
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 2 |
CR
| Conrail | 2 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 4 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 1 |
FBOX
| TTX Company | 1 |
FP
| Fordyce & Princeton Railroad Company | 1 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
GMRC
| Green Mountain RR | 2 |
GNWR
| Genesee and Wyoming Railroad Company | 2 |
GTW
| Grand Trunk Western | 2 |
HS
| H and S Railroad Company | 3 |
IATR
| Iowa Traction Railroad Company | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 3 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 6 |
MET
| Modesto and Empire Traction Company | 2 |
MQT
| Marquette Rail | 1 |
MRL
| Montana Rail Link | 1 |
MRS
| Manufacturers Railway | 5 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
ONT
| Ontario Northland Railway | 1 |
PLTX
| Potlatch Corporation | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
RBOX
| Railbox Company | 2 |
RVPR
| Riverport R.R., L.L.C. | 1 |
SLC
| San Luis Central Railroad Company | 1 |
SLR
| St Lawrence & Atlantic | 3 |
SRN
| Sabine River & Northern | 1 |
SRY
| Southern Railway of British Columbia Lim | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
STE
| Stockton Terminal and Eastern RR | 1 |
TASD
| Terminal Alabama State Docks | 5 |
TBOX
| TTX Company | 2 |
UPP
| Union Pacific Passenger | 1 |
WC
| Wisconsin Central | 1 |
WP
| Western Pacific | 2 |
YKR
| York Rail | 1 |