AEPX
| American Electric Power | 5 |
APEX
| Apex Tank Car Line | 1 |
ARR
| Alaska Railroad | 31 |
ATSF
| Atchison Topeka & Santa Fe | 33 |
BDPX
| BDPX | 1 |
BLE
| Bessemer & Lake Erie | 2 |
BM
| Boston & Maine | 4 |
BN
| Burlington Northern | 71 |
BNSF
| BNSF Railway | 9 |
CLAX
| Guardian Leasing Inc | 1 |
CMFX
| CMFX | 1 |
CNW
| Chicago & Northwestern | 68 |
CR
| Conrail | 12 |
CRR
| Clinchfield | 1 |
CSX
| CSX Railroad | 13 |
CTRN
| Union Pacific Railroad Company | 21 |
DAFX
| Department of Defence Troop Support and Aviation Material Re | 1 |
DLW
| Delaware Lackawanna & Western | 2 |
DRGW
| Denver & Rio Grande Western | 36 |
EFE
| EFE | 1 |
ENR
| E and N Railway Company Limited | 1 |
FRKX
| Florida Rock Industries | 3 |
GABX
| General American Marks Company | 3 |
GACX
| General American Marks Company | 8 |
GEAX
| General Electric Rail Services | 4 |
GNRR
| Georgia Northeastern | 1 |
GREX
| Georgetown Rail Equipment Company | 2 |
HERZ
| HERZ | 1 |
HIRR
| Hainesport Industrial Railroad | 2 |
HZGX
| Herzog Contracting Corporation | 1 |
IFRX
| Infinity Rail LLC | 1 |
INRD
| Indiana Railroad | 7 |
ITFX
| INFINITY TRANSPORTATION III LLC | 3 |
ITMX
| ITMX | 1 |
JHMX
| Alabama Power Company | 2 |
LN
| Louisville & Nashville | 1 |
LNE
| Lehigh and New England Ry | 1 |
LVRR
| Lycoming Valley | 3 |
MACX
| Mac Acquisitions. L.P. | 1 |
MEC
| Maine Central | 1 |
MILX
| General Electric Rail Services | 1 |
MNCX
| Minnesota Corn Processors Incorporated | 1 |
MP
| Missouri Pacific | 79 |
MWAX
| Martin Marietta Materials Incorporated | 9 |
NCRC
| Nebraska Central | 2 |
NS
| Norfolk Southern | 4 |
NW
| Norfolk & Western | 6 |
NYC
| New York Central | 5 |
PKTX
| Citizens Gas & Coke Utility | 4 |
PMRX
| Progress Metal Reclamation Company | 3 |
PRR
| Pennsylvania Railroad | 1 |
PSR
| Pittsburg and Shawmut Railroad Incorporated | 7 |
RBMN
| Reading Blue Mountain & Northern | 33 |
RMGX
| Andersons - Railgroup | 1 |
SOU
| Southern | 135 |
SP
| Southern Pacific | 5 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 2 |
TFOX
| RESIDCO | 1 |
TILX
| Trinity Industries Leasing Company | 4 |
TNM
| Union Pacific Railroad Company | 4 |
TPPX
| Thilmany LLC | 1 |
TYOX
| The Tie Yard Of Omaha Inc. | 5 |
UP
| Union Pacific Railroad Company | 14 |
VAPX
| Virginia Power | 1 |
VULX
| Vulcan Materials | 4 |
WC
| Wisconsin Central | 2 |
WIMX
| Wimpey Minerals USA, Inc. | 1 |
WP
| Western Pacific | 3 |