ABOX
| TTX Company | 3 |
ADN
| Ashley Drew & Northern | 2 |
AGR
| Alabama and Gulf Coast | 2 |
AKMD
| Arkansas Midland Railroad Company | 1 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AM
| Arkansas & Missouri | 3 |
AMTK
| Amtrak | 1 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
ATW
| Atlantic and Western | 5 |
AZER
| Arizona Eastern Railway Company | 15 |
BAEX
| Andersons | 3 |
BCOL
| Canadian National Railways | 4 |
BM
| Boston & Maine | 7 |
BNSF
| BNSF Railway | 8 |
BPRR
| Buffalo and Pittsburgh | 1 |
CIC
| Cedar Rapids & Iowa City | 1 |
CIRR
| Chattahoochee Industrial Railroad | 3 |
CMHX
| CarMath Incorporated | 3 |
CN
| Canadian National Railways | 7 |
CNA
| Canadian National Railways | 9 |
CNIS
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 7 |
CP
| Canadian Pacific Railway | 8 |
CPAA
| Canadian Pacific Railway | 2 |
CR
| Conrail | 7 |
CRLE
| Coe Rail Incorporated | 8 |
CSX
| CSX Railroad | 82 |
CV
| Central Vermont | 3 |
DL
| Delaware-Lackawanna Railroad Company | 3 |
DME
| Dakota, Minnesota and Eastern | 1 |
DRGW
| Denver & Rio Grande Western | 7 |
DWC
| Canadian National Railways | 13 |
EEC
| East Erie Commercial Railroad | 4 |
FBOX
| TTX Company | 70 |
FGLK
| Finger Lakes Railway | 9 |
FSRR
| FerroSur | 3 |
FXE
| Ferromex | 7 |
GACX
| General American Marks Company | 1 |
GFRR
| Georgia and Florida Railnet | 1 |
GMRC
| Green Mountain RR | 24 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTW
| Grand Trunk Western | 7 |
GVSR
| Galveston Railroad L.P. | 1 |
HLMX
| Helm Financial Corporation | 2 |
HPJX
| Helm-Pacific Leasing | 4 |
HS
| H and S Railroad Company | 21 |
IANR
| Iowa Northern Ry | 1 |
IBT
| International Bridge and Terminal Company | 10 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 5 |
KWT
| KWT Railway | 1 |
LRS
| Laurinburg and Southern | 1 |
LVRC
| Lamoille Valley | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MB
| Meridian & Bigbee | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 3 |
MDW
| Minnesota Dakota and Western Railway Com | 3 |
ME
| Morristown & Erie Railroad | 4 |
MEC
| Maine Central | 18 |
MMA
| Montreal, Maine & Atlantic | 1 |
MP
| Missouri Pacific | 6 |
MRL
| Montana Rail Link | 2 |
MWCX
| Midwest Railcar Corporation | 3 |
NDYX
| First Union Rail | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
NOKL
| Northwestern Oklahoma | 2 |
NS
| Norfolk Southern | 36 |
NW
| Norfolk & Western | 5 |
NYC
| New York Central | 18 |
OAR
| Old Augusta Railroad | 2 |
ONT
| Ontario Northland Railway | 1 |
PC
| Penn Central | 2 |
PDRR
| Pee Dee River RR | 1 |
PRR
| Pennsylvania Railroad | 2 |
PSMX
| Esco Corporation | 6 |
RBOX
| Railbox Company | 26 |
ROCK
| Rock Island | 4 |
SGLR
| Seminole Gulf | 4 |
SLR
| St Lawrence & Atlantic | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 34 |
SP
| Southern Pacific | 27 |
SRN
| Sabine River & Northern | 1 |
SRY
| Southern Railway of British Columbia Lim | 2 |
SSW
| St Louis Southwestern (Cotton Belt) | 17 |
TBOX
| TTX Company | 62 |
TFM
| Kansas City Southern De Mexico | 2 |
TOBX
| TTX Company - Box Cars | 3 |
UP
| Union Pacific Railroad Company | 11 |
WC
| Wisconsin Central | 15 |
WCCL
| Wisconsin Central | 2 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
WP
| Western Pacific | 4 |
WRWK
| Providence & Worchester Railroad | 2 |
YARR
| Youngstown and Austintown Railroad | 2 |
YKR
| York Rail | 5 |