ABOX
| TTX Company | 22 |
AGR
| Alabama and Gulf Coast | 4 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 13 |
BAEX
| Andersons | 1 |
BKTY
| Union Pacific Railroad Company | 19 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 21 |
BO
| Baltimore & Ohio | 2 |
BOX
| BOX | 1 |
CAGY
| Columbus & Greenville Railway | 1 |
CAMY
| CAMP CHASE RAILWAY COMPANY, LLC | 16 |
CIC
| Cedar Rapids & Iowa City | 6 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CLSX
| Cargill Incorporated Salt Division | 2 |
CMHX
| CarMath Incorporated | 2 |
CN
| Canadian National Railways | 6 |
CNA
| Canadian National Railways | 14 |
CNIS
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 2 |
CO
| Chesapeake & Ohio | 8 |
COER
| Crab Orchard & Egyptian | 8 |
CP
| Canadian Pacific Railway | 24 |
CR
| Conrail | 2 |
CRLE
| Coe Rail Incorporated | 5 |
CSX
| CSX Railroad | 259 |
CUOH
| Columbus and Ohio River Railroad Company | 6 |
CV
| Central Vermont | 1 |
DOTX
| USDOT/Federal Railroad Administration | 1 |
DRGW
| Denver & Rio Grande Western | 10 |
DWC
| Canadian National Railways | 3 |
EEC
| East Erie Commercial Railroad | 5 |
FBOX
| TTX Company | 59 |
FCRD
| First Coast Railway | 1 |
FGLK
| Finger Lakes Railway | 3 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
FSRR
| FerroSur | 2 |
GACX
| General American Marks Company | 2 |
GMRC
| Green Mountain RR | 6 |
GNWR
| Genesee and Wyoming Railroad Company | 7 |
GTW
| Grand Trunk Western | 11 |
HS
| H and S Railroad Company | 15 |
IANR
| Iowa Northern Ry | 2 |
IATR
| Iowa Traction Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 4 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 13 |
KCSM
| Kansas City Southern De Mexico | 8 |
KYLE
| Kyle Railroad | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 14 |
LRS
| Laurinburg and Southern | 36 |
LRWN
| Little Rock & Western | 2 |
LW
| Louisville and Wadley Railway Company | 4 |
MB
| Meridian & Bigbee | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 5 |
MP
| Missouri Pacific | 15 |
MQT
| Marquette Rail | 2 |
MSDR
| Knoxville & Holston River Railroad | 1 |
MTNR
| Mississippi Tennessee Railroad LLC | 6 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 4 |
NOKL
| Northwestern Oklahoma | 6 |
NS
| Norfolk Southern | 12 |
NYC
| New York Central | 28 |
ONT
| Ontario Northland Railway | 1 |
PAL
| Paducah & Louisville | 2 |
PC
| Penn Central | 1 |
PDRR
| Pee Dee River RR | 13 |
POHC
| Pittsburgh & Ohio Central | 2 |
PSMX
| Esco Corporation | 1 |
QC
| Quebec Central | 3 |
RBOX
| Railbox Company | 77 |
RSP
| Roscoe Snyder and Pacific Railway | 3 |
SBD
| Seaboard System | 1 |
SCFX
| SCFX | 2 |
SGLR
| Seminole Gulf | 2 |
SLC
| San Luis Central Railroad Company | 1 |
SNC
| Saratoga & North Creek Railway | 5 |
SOU
| Southern | 29 |
SP
| Southern Pacific | 32 |
SRN
| Sabine River & Northern | 2 |
SRY
| Southern Railway of British Columbia Lim | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 31 |
TBOX
| TTX Company | 438 |
TOBX
| TTX Company - Box Cars | 6 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TOFX
| TTX Company - Box Cars | 1 |
TR
| Tomahawk Railway L.P. | 10 |
UCRY
| Utah Central | 4 |
UP
| Union Pacific Railroad Company | 10 |
WC
| Wisconsin Central | 14 |
WCOR
| Wellsboro and Corning Railroad Company | 4 |
WE
| Wheeling & Lake Erie | 12 |
WFRX
| WELLS FARGO RAIL CORPORATION | 5 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
WP
| Western Pacific | 5 |
WRWK
| Providence & Worchester Railroad | 10 |
WTRM
| Warren and Trumbull Railroad Company | 15 |
YKR
| York Rail | 1 |