ADN
| Ashley Drew & Northern | 1 |
AKMD
| Arkansas Midland Railroad Company | 1 |
ANR
| Angelina and Neches River Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 1 |
AZER
| Arizona Eastern Railway Company | 2 |
BAEX
| Andersons | 1 |
BAYL
| Bay Line, LLC | 1 |
BCOL
| Canadian National Railways | 1 |
BKTY
| Union Pacific Railroad Company | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 3 |
BR
| Buffalo and Pittsburgh | 1 |
CAGY
| Columbus & Greenville Railway | 2 |
CGW
| Chicago Great Western | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CMHX
| CarMath Incorporated | 1 |
CN
| Canadian National Railways | 5 |
CNA
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 2 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 5 |
DM
| Detroit & Mackinac | 1 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
FBOX
| TTX Company | 1 |
FCRD
| First Coast Railway | 1 |
FP
| Fordyce & Princeton Railroad Company | 1 |
FSRR
| FerroSur | 1 |
FXE
| Ferromex | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 5 |
GTW
| Grand Trunk Western | 2 |
HATX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 5 |
IBT
| International Bridge and Terminal Company | 1 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 9 |
KELX
| Kellogg Company | 1 |
KRR
| Kiamichi | 1 |
LRS
| Laurinburg and Southern | 2 |
LRWN
| Little Rock & Western | 1 |
LVRC
| Lamoille Valley | 2 |
LW
| Louisville and Wadley Railway Company | 1 |
MB
| Meridian & Bigbee | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 2 |
MOT
| Marine Oil Transportation | 1 |
MP
| Missouri Pacific | 7 |
MRLX
| Mid America Rail Car Leasing | 1 |
MWCX
| Midwest Railcar Corporation | 3 |
NADX
| General Electric Rail Services | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 2 |
NWR
| Nashville & Western Railroad Corp. | 1 |
NYC
| New York Central | 10 |
RBOX
| Railbox Company | 4 |
SGLR
| Seminole Gulf | 1 |
SIRX
| Southern Illinois Railcar Company | 1 |
SOO
| Soo Line | 2 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 10 |
SPMW
| Southern Pacific Maintenance of Way | 1 |
SRN
| Sabine River & Northern | 5 |
SSW
| St Louis Southwestern (Cotton Belt) | 3 |
TBOX
| TTX Company | 6 |
TCWR
| Twin Cities and Western | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 3 |
TOFX
| TTX Company - Box Cars | 1 |
TP
| Texas & Pacific | 1 |
TSE
| Texas South-Eastern Railroad Company | 3 |
UP
| Union Pacific Railroad Company | 8 |
WLO
| Waterloo Railway Company (Illinois Central) | 3 |
WP
| Western Pacific | 5 |
WSOR
| Wisconsin & Southern | 1 |