AM
| Arkansas & Missouri | 2 |
AMMC
| AMMC | 5 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
AOKF
| AOKF | 1 |
ATW
| Atlantic and Western | 13 |
AZER
| Arizona Eastern Railway Company | 1 |
BASF
| BASF | 3 |
BLE
| Bessemer & Lake Erie | 1 |
BN
| Burlington Northern | 145 |
BNSF
| BNSF Railway | 137 |
BS
| Birmingham Southern RR | 11 |
BSR
| BSR | 1 |
BSX
| BSX | 2 |
CBRY
| Copper Basin Railway | 34 |
CIAX
| CIAX | 112 |
CLMX
| Cyprus Sierrita Corporation | 14 |
CMQC
| CMQC | 7 |
CN
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 7 |
CP
| Canadian Pacific Railway | 3 |
CR
| Conrail | 18 |
CRHA
| Candian Railroad Historical Assocation | 2 |
CSX
| CSX Railroad | 1 |
CWA
| Central Washington Railroad Co | 2 |
DIR
| DIR | 1 |
DMIR
| Duluth Missabe & Iron Range | 1517 |
DMN
| Duluth Missabe and Northern Railway | 5 |
DRGW
| Denver & Rio Grande Western | 1 |
DWP
| Duluth Winnipeg & Pacific | 1 |
EFA
| Estrada de Ferro Amapa | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
ELS
| Escanaba and Lake Superior Railroad Comp | 11 |
ETWN
| ETWN | 1 |
FEPA
| FEPA | 1 |
GDE
| GDE | 1 |
GN
| Great Northern | 15 |
GWWD
| Greater Winnipeg Water District | 2 |
IOCC
| IOCC | 34 |
IWSX
| IWSX | 1 |
KCC
| KCC | 3 |
KCCX
| Kennecott Utah Copper Corporation | 4 |
LCM
| Lake Champlain & Moriah | 2 |
LHR
| Lehigh & Hudson River | 1 |
LI
| Long Island Rail Road Company | 20 |
LSI
| Lake Superior and Ishpeming Railroad | 856 |
MAA
| Magma Arizona Railroad Company | 1 |
MC
| Mass Coastal | 1 |
ME
| Morristown & Erie Railroad | 3 |
MILW
| Milwaukee Road | 13 |
MRS
| Manufacturers Railway | 2 |
MTSX
| MAX TRANSPORTATION SERVICE | 7 |
NBEC
| New Brunswick East Coast Railway Company | 10 |
NN
| Northern Nevada Railroad Corporation | 6 |
NP
| Northern Pacific | 6 |
NS
| Norfolk Southern | 1 |
NSMX
| NORTHSHORE MINING CO | 62 |
NW
| Norfolk & Western | 1 |
OLB
| Omaha Lincoln and Beatrice Railway Company | 12 |
OTDX
| Greenbrier Leasing Corporation | 1 |
PC
| Penn Central | 17 |
PRR
| Pennsylvania Railroad | 8 |
QCM
| Quebec Cartier Railroad | 17 |
QIT
| QIT | 1 |
QUEE
| QUEE | 1 |
RENF
| RENF | 1 |
RFBX
| AK IRON RESOURCES LLC | 1 |
SAS
| South African Railways | 86 |
SFPP
| SFPP | 14 |
SOO
| Soo Line | 2 |
SP
| Southern Pacific | 8 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 54 |
TSMX
| TSMX | 11 |
UP
| Union Pacific Railroad Company | 7 |
VAEX
| VAEX | 12 |
VALE
| Valley Railroad Company | 3 |
VLI
| Valor da Logistica Integrada | 1 |
WRRC
| Western Rail Road Company | 4 |