AM
| Arkansas & Missouri | 2 |
AMEX
| Allied Enterprises | 1 |
BCOL
| Canadian National Railways | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 1 |
BO
| Baltimore & Ohio | 1 |
CMO
| Chicago St Paul Minneapolis & Omaha | 2 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 1 |
CO
| Chesapeake & Ohio | 1 |
CR
| Conrail | 39 |
CRBX
| OmniSource Corporation | 1 |
CSS
| Chicago South Shore And South Bend | 2 |
CSX
| CSX Railroad | 14 |
CTRN
| Union Pacific Railroad Company | 1 |
CWEX
| Midwest Generation LLC | 6 |
DH
| Delaware & Hudson | 1 |
DJJX
| Joseph Transportation Incorporated | 1 |
DRGW
| Denver & Rio Grande Western | 4 |
EDGX
| Alliant Energy | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
ENVX
| EnergySolutions LLC | 1 |
FEC
| Florida East Coast | 1 |
FPBX
| International Paper Corporation | 1 |
GGPX
| General American Marks Company | 2 |
GNTX
| TTX Company | 3 |
GONX
| Railgon Company | 1 |
GWWR
| Gateway Western | 1 |
HZGX
| Herzog Contracting Corporation | 6 |
ICG
| Illinois Central Gulf | 1 |
KEYX
| Keywell Corporation | 1 |
KIMX
| Kimmins Contracting Corp | 2 |
LNAL
| Louisville New Albany and Corydon Railroad | 1 |
METX
| METRA | 3 |
MIRX
| Regional Recycling LLC | 1 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 5 |
MS
| Michigan Shore Railroad Incorporated | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 15 |
NW
| Norfolk & Western | 2 |
NYC
| New York Central | 8 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SCL
| Seaboard Coast Line | 1 |
SOU
| Southern | 6 |
SP
| Southern Pacific | 5 |
SPEX
| SOUTHERN PARTS & EQUIPMENT INC. | 1 |
TCMX
| CIT Group/Capital Finance, Inc | 1 |
TFM
| Kansas City Southern De Mexico | 2 |
TZPR
| Tazewell & Peoria Railroad | 1 |
UP
| Union Pacific Railroad Company | 5 |
WC
| Wisconsin Central | 2 |
WEPX
| Wisconsin Electric Power Company | 2 |
ZVBX
| Ferrous Processing and Trading Company | 1 |