AGR
| Alabama and Gulf Coast | 1 |
AMTK
| Amtrak | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
AR
| Aberdeen and Rockfish | 3 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
ATW
| Atlantic and Western | 2 |
BAEX
| Andersons | 1 |
BAYL
| Bay Line, LLC | 1 |
BN
| Burlington Northern | 3 |
BO
| Baltimore & Ohio | 1 |
CHW
| Chesapeake Western | 1 |
CMEX
| Cemex Inc | 1 |
CNA
| Canadian National Railways | 1 |
CO
| Chesapeake & Ohio | 2 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 2 |
CRR
| Clinchfield | 1 |
CSX
| CSX Railroad | 5 |
FLOX
| CIT Group/Capital Finance, Inc | 1 |
FSRR
| FerroSur | 3 |
GFRR
| Georgia and Florida Railnet | 1 |
GSMR
| Great Smoky Mountains | 1 |
HLMX
| Helm Financial Corporation | 1 |
ICG
| Illinois Central Gulf | 1 |
ITC
| Illinois Terminal Railroad | 1 |
ITFX
| INFINITY TRANSPORTATION III LLC | 1 |
KCS
| Kansas City Southern | 1 |
LN
| Louisville & Nashville | 5 |
LRS
| Laurinburg and Southern | 28 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 12 |
MP
| Missouri Pacific | 2 |
MRS
| Manufacturers Railway | 1 |
MTW
| Marinette Tomahawk & Western | 1 |
NDYX
| First Union Rail | 2 |
NS
| Norfolk Southern | 18 |
NW
| Norfolk & Western | 8 |
RFP
| Richmond Fredericksburg & Potomac | 4 |
RR
| Raritan River | 2 |
SBD
| Seaboard System | 9 |
SCL
| Seaboard Coast Line | 11 |
SOO
| Soo Line | 1 |
SOU
| Southern | 56 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 9 |
UCRY
| Utah Central | 1 |
UP
| Union Pacific Railroad Company | 1 |
USLX
| General Electric Rail Services | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
WRWK
| Providence & Worchester Railroad | 1 |