ADN
| Ashley Drew & Northern | 18 |
AGR
| Alabama and Gulf Coast | 14 |
ALAB
| Alabama Railroad | 10 |
ALM
| Arkansas Louisiana and Mississippi Railr | 95 |
AM
| Arkansas & Missouri | 7 |
BAR
| Bangor & Aroostook | 3 |
BM
| Boston & Maine | 3 |
BN
| Burlington Northern | 1 |
BPRR
| Buffalo and Pittsburgh | 128 |
CAGY
| Columbus & Greenville Railway | 2 |
CAMY
| CAMP CHASE RAILWAY COMPANY, LLC | 6 |
CAXX
| CEMENTO CRUZ AZUL | 1 |
CEFX
| CIT Group/Capital Finance, Inc | 16 |
CIC
| Cedar Rapids & Iowa City | 47 |
CIRR
| Chattahoochee Industrial Railroad | 44 |
CLC
| Columbia and Cowlitz Railway Company | 13 |
CNA
| Canadian National Railways | 18 |
CO
| Chesapeake & Ohio | 4 |
CR
| Conrail | 5 |
CRLE
| Coe Rail Incorporated | 175 |
CSX
| CSX Railroad | 104 |
CUOH
| Columbus and Ohio River Railroad Company | 4 |
DME
| Dakota, Minnesota and Eastern | 18 |
DRGW
| Denver & Rio Grande Western | 1 |
DWC
| Canadian National Railways | 108 |
EEC
| East Erie Commercial Railroad | 42 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 11 |
FRR
| Falls Road Railroad Company Incorporated | 3 |
FSR
| Fort Smith Railroad Company | 4 |
GACX
| General American Marks Company | 3 |
GLSR
| Gloster Southern Railroad Corporation | 2 |
GMRC
| Green Mountain RR | 18 |
GNWR
| Genesee and Wyoming Railroad Company | 82 |
GSWR
| Georgia Southwestern | 1 |
GTW
| Grand Trunk Western | 7 |
GVSR
| Galveston Railroad L.P. | 93 |
HS
| H and S Railroad Company | 96 |
IANR
| Iowa Northern Ry | 12 |
IATR
| Iowa Traction Railroad Company | 94 |
ITFX
| INFINITY TRANSPORTATION III LLC | 3 |
ITLX
| General Electric Rail Services | 3 |
KRR
| Kiamichi | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 20 |
LRS
| Laurinburg and Southern | 147 |
LSRC
| Lake State Railway Company | 25 |
LVRC
| Lamoille Valley | 23 |
LVRR
| Lycoming Valley | 3 |
MDW
| Minnesota Dakota and Western Railway Com | 63 |
MNNR
| Minnesota Commercial | 1 |
MP
| Missouri Pacific | 16 |
MR
| McCloud Railway Company | 9 |
NADX
| General Electric Rail Services | 10 |
NOKL
| Northwestern Oklahoma | 79 |
NS
| Norfolk Southern | 85 |
NW
| Norfolk & Western | 1 |
NYC
| New York Central | 29 |
OAR
| Old Augusta Railroad | 1 |
ONW
| Oregon & Northwestern | 1 |
PDRR
| Pee Dee River RR | 38 |
POVA
| Pend Oreille Valley Railroad | 1 |
RBMN
| Reading Blue Mountain & Northern | 9 |
RVPR
| Riverport R.R., L.L.C. | 3 |
SGLR
| Seminole Gulf | 7 |
SLC
| San Luis Central Railroad Company | 108 |
SMW
| St Marys Railway West LLC | 41 |
SOU
| Southern | 28 |
SP
| Southern Pacific | 1157 |
SPY
| SPY | 1 |
SRAX
| Southern Rail Associates | 5 |
SRN
| Sabine River & Northern | 41 |
SRY
| Southern Railway of British Columbia Lim | 6 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 5 |
SSW
| St Louis Southwestern (Cotton Belt) | 178 |
TASD
| Terminal Alabama State Docks | 14 |
TOE
| Texas Oklahoma and Eastern RR Company | 37 |
TSBY
| Great Lakes Central Railroad | 4 |
UP
| Union Pacific Railroad Company | 31 |
WCCL
| Wisconsin Central | 49 |
WCOR
| Wellsboro and Corning Railroad Company | 11 |
WCTR
| WCTU Company White City Terminal Railway | 25 |
WLO
| Waterloo Railway Company (Illinois Central) | 16 |
WP
| Western Pacific | 129 |
WRWK
| Providence & Worchester Railroad | 32 |
YARR
| Youngstown and Austintown Railroad | 39 |
YB
| Youngstown Belt Railroad Company | 10 |
YKR
| York Rail | 7 |