AM
| Arkansas & Missouri | 1 |
AOK
| Arkansas-Oklahoma Railroad | 9 |
BCIT
| Canadian National Railways | 16 |
BCOL
| Canadian National Railways | 169 |
BN
| Burlington Northern | 48 |
BNSF
| BNSF Railway | 61 |
BR
| Buffalo and Pittsburgh | 17 |
CAGY
| Columbus & Greenville Railway | 6 |
CBRY
| Copper Basin Railway | 9 |
CN
| Canadian National Railways | 4 |
CNA
| Canadian National Railways | 62 |
CNIS
| Canadian National Railways | 3 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 81 |
FDDM
| Fort Dodge Des Moines & Southern | 1 |
FURX
| First Union Rail | 4 |
GMRC
| Green Mountain RR | 14 |
GNWR
| Genesee and Wyoming Railroad Company | 6 |
HE
| Hollis and Eastern Railroad Company | 14 |
HLSC
| Hampton Railway Incorporated | 127 |
HPTX
| HAMPTON CAPITAL LLC | 2 |
KLRX
| KOCH RAIL LLC | 3 |
LMIC
| Lake Michigan & Indiana Railroad | 15 |
MEC
| Maine Central | 19 |
MMA
| Montreal, Maine & Atlantic | 42 |
MR
| McCloud Railway Company | 8 |
MSRC
| Kansas City Southern | 87 |
MSV
| Mississippi and Skuna Valley Railroad Co | 11 |
NOKL
| Northwestern Oklahoma | 67 |
NS
| Norfolk Southern | 35 |
ONT
| Ontario Northland Railway | 5 |
PHMX
| P&H Mining Equipment | 9 |
SOU
| Southern | 1 |
SRY
| Southern Railway of British Columbia Lim | 27 |
TNER
| Texas Northeastern Division Mid-Michigan | 6 |
TOE
| Texas Oklahoma and Eastern RR Company | 14 |
TSE
| Texas South-Eastern Railroad Company | 2 |
TTZX
| TTX Company-Centerbeam Flats | 1022 |
UP
| Union Pacific Railroad Company | 156 |
WCRC
| Washington Central | 107 |
WRWK
| Providence & Worchester Railroad | 30 |