ABOX
| TTX Company | 6 |
AGR
| Alabama and Gulf Coast | 1 |
ALAB
| Alabama Railroad | 1 |
AN
| Apalachicola Northern | 1 |
ANR
| Angelina and Neches River Railroad | 1 |
AOK
| Arkansas-Oklahoma Railroad | 9 |
ASV
| Abilene & Smokey Valley | 1 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
ATW
| Atlantic and Western | 11 |
BCOL
| Canadian National Railways | 1 |
BKTY
| Union Pacific Railroad Company | 21 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 31 |
BO
| Baltimore & Ohio | 5 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CIC
| Cedar Rapids & Iowa City | 2 |
CKIX
| C.K. Industries | 1 |
CMHX
| CarMath Incorporated | 17 |
CN
| Canadian National Railways | 6 |
CNA
| Canadian National Railways | 6 |
CNIS
| Canadian National Railways | 4 |
CO
| Chesapeake & Ohio | 7 |
COER
| Crab Orchard & Egyptian | 7 |
CP
| Canadian Pacific Railway | 7 |
CPAA
| Canadian Pacific Railway | 3 |
CPLT
| CAMINO, PLACERVILLE & LAKE TAHOE RAILROAD CO. | 1 |
CR
| Conrail | 2 |
CRDX
| Chicago Freight Car Leasing Company | 1 |
CRLE
| Coe Rail Incorporated | 2 |
CSX
| CSX Railroad | 28 |
DRGW
| Denver & Rio Grande Western | 4 |
DWC
| Canadian National Railways | 8 |
EEC
| East Erie Commercial Railroad | 22 |
FBOX
| TTX Company | 22 |
FCRD
| First Coast Railway | 1 |
FGER
| Fruit Growers Express Company | 1 |
FSRR
| FerroSur | 5 |
FXE
| Ferromex | 1 |
GACX
| General American Marks Company | 49 |
GNRR
| Georgia Northeastern | 2 |
GNWR
| Genesee and Wyoming Railroad Company | 2 |
GTRA
| Golden Triangle Railroad | 1 |
GTW
| Grand Trunk Western | 2 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 18 |
IANR
| Iowa Northern Ry | 2 |
IATR
| Iowa Traction Railroad Company | 3 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 8 |
KCSM
| Kansas City Southern De Mexico | 1 |
KYLE
| Kyle Railroad | 9 |
LBR
| Lowville and Beaver River Railroad Compa | 1 |
LOAM
| Lousiana Midland | 1 |
LRS
| Laurinburg and Southern | 11 |
LW
| Louisville and Wadley Railway Company | 9 |
MDW
| Minnesota Dakota and Western Railway Com | 2 |
MP
| Missouri Pacific | 14 |
MRL
| Montana Rail Link | 1 |
MSTL
| Minneapolis & St Louis | 1 |
MTW
| Marinette Tomahawk & Western | 1 |
MWCX
| Midwest Railcar Corporation | 9 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 5 |
NLG
| Kansas City Southern Railway Company (North Louisiana & Gulf) | 1 |
NOKL
| Northwestern Oklahoma | 9 |
NRLX
| CIT Group/Capital Finance, Inc | 3 |
NS
| Norfolk Southern | 35 |
NW
| Norfolk & Western | 4 |
NYC
| New York Central | 1 |
RBOX
| Railbox Company | 40 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 1 |
RSP
| Roscoe Snyder and Pacific Railway | 1 |
SBD
| Seaboard System | 2 |
SLGG
| Progress Rail Services Corporation | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOU
| Southern | 21 |
SP
| Southern Pacific | 30 |
SRN
| Sabine River & Northern | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 5 |
TBOX
| TTX Company | 130 |
TFM
| Kansas City Southern De Mexico | 1 |
TOBX
| TTX Company - Box Cars | 5 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TOFX
| TTX Company - Box Cars | 3 |
TP
| Texas & Pacific | 1 |
TR
| Tomahawk Railway L.P. | 27 |
UCRY
| Utah Central | 6 |
UP
| Union Pacific Railroad Company | 11 |
USN
| United States Navy | 2 |
WC
| Wisconsin Central | 2 |
WP
| Western Pacific | 2 |
WRWK
| Providence & Worchester Railroad | 7 |