ACL
| Atlantic Coast Line | 1 |
AM
| Arkansas & Missouri | 1 |
ATSF
| Atchison Topeka & Santa Fe | 4 |
BCOL
| Canadian National Railways | 1 |
BLE
| Bessemer & Lake Erie | 7 |
BN
| Burlington Northern | 2 |
BO
| Baltimore & Ohio | 5 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 2 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 25 |
CSS
| Chicago South Shore And South Bend | 42 |
CSX
| CSX Railroad | 9 |
CW
| Colorado and Wyoming | 1 |
CWP
| Chicago West Pullman & Southern | 1 |
DEEX
| Detroit Edison Company | 1 |
DGNO
| Dallas Garland & Northeastern | 1 |
DJLX
| CIT Group/Capital Finance, Inc | 1 |
DME
| Dakota, Minnesota and Eastern | 1 |
DREX
| Wilmot Transportation and Logistics | 1 |
DTI
| Detroit Toledo & Ironton | 2 |
EJE
| Elgin Joliet and Eastern | 5 |
FURX
| First Union Rail | 1 |
FXE
| Ferromex | 3 |
GEAX
| General Electric Rail Services | 12 |
GGPX
| General American Marks Company | 6 |
GONX
| Railgon Company | 2 |
GTW
| Grand Trunk Western | 1 |
HPJX
| Helm-Pacific Leasing | 3 |
IAIS
| Iowa Interstate | 5 |
IC
| Illinois Central | 2 |
ICG
| Illinois Central Gulf | 8 |
IHB
| Indiana Harbor Belt | 46 |
INLX
| Incoal Company | 1 |
ITC
| Illinois Terminal Railroad | 4 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
LT
| Lake Terminal Railroad Company | 1 |
LXOH
| Knoxville & Holston River Railroad | 1 |
MHFX
| MHF Logistical Solutions Incorporated | 3 |
MKT
| Missouri-Kansas-Texas | 5 |
MLMX
| Metal Management Inc. | 4 |
MP
| Missouri Pacific | 14 |
MRL
| Montana Rail Link | 1 |
MTSX
| MAX TRANSPORTATION SERVICE | 2 |
MWCX
| Midwest Railcar Corporation | 2 |
NCUX
| CIT Group/Capital Finance, Inc | 1 |
NKP
| Nickel Plate | 2 |
NOKL
| Northwestern Oklahoma | 1 |
NORX
| Northern Indiana Public Service Company | 1 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 12 |
NSAX
| National Steel Corporation | 1 |
NSTX
| Consumers Energy Company | 6 |
NW
| Norfolk & Western | 7 |
OHFX
| Fluor Daniel Fernald | 1 |
PC
| Penn Central | 3 |
PNJX
| Trinity Rail Management | 2 |
RMGX
| Andersons - Railgroup | 1 |
SBD
| Seaboard System | 1 |
SOM
| Somerset Railroad Corporation | 1 |
SOO
| Soo Line | 2 |
SOU
| Southern | 8 |
SP
| Southern Pacific | 1 |
TCMX
| CIT Group/Capital Finance, Inc | 1 |
TFM
| Kansas City Southern De Mexico | 1 |
THB
| Toronto Hamilton & Buffalo | 1 |
UP
| Union Pacific Railroad Company | 2 |
VULX
| Vulcan Materials | 1 |
WC
| Wisconsin Central | 7 |
WE
| Wheeling & Lake Erie | 4 |