ABOX
| TTX Company | 4 |
AERC
| Albany and Eastern Railroad Company | 2 |
AGR
| Alabama and Gulf Coast | 1 |
AKMD
| Arkansas Midland Railroad Company | 1 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 124 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 7 |
BAEX
| Andersons | 2 |
BCOL
| Canadian National Railways | 2 |
BM
| Boston & Maine | 5 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 29 |
CCR
| Corinth & Counce | 3 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CN
| Canadian National Railways | 5 |
CNA
| Canadian National Railways | 4 |
CNIS
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 1 |
CP
| Canadian Pacific Railway | 14 |
CPAA
| Canadian Pacific Railway | 2 |
CRLE
| Coe Rail Incorporated | 86 |
CSX
| CSX Railroad | 20 |
DMM
| Dansville and Mount Morris Railroad Comp | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
DWC
| Canadian National Railways | 3 |
EEC
| East Erie Commercial Railroad | 31 |
FBOX
| TTX Company | 208 |
FGLK
| Finger Lakes Railway | 28 |
FXE
| Ferromex | 2 |
GMRC
| Green Mountain RR | 241 |
GNWR
| Genesee and Wyoming Railroad Company | 2 |
GVSR
| Galveston Railroad L.P. | 2 |
HLMX
| Helm Financial Corporation | 4 |
HPJX
| Helm-Pacific Leasing | 3 |
HS
| H and S Railroad Company | 14 |
IC
| Illinois Central | 2 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 59 |
LVRC
| Lamoille Valley | 3 |
LW
| Louisville and Wadley Railway Company | 6 |
MB
| Meridian & Bigbee | 2 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 128 |
MP
| Missouri Pacific | 1 |
MQT
| Marquette Rail | 18 |
MSDR
| Knoxville & Holston River Railroad | 27 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 2 |
NOKL
| Northwestern Oklahoma | 17 |
NRLX
| CIT Group/Capital Finance, Inc | 4 |
NS
| Norfolk Southern | 47 |
NYC
| New York Central | 1 |
ONT
| Ontario Northland Railway | 1 |
PDRR
| Pee Dee River RR | 2 |
POHC
| Pittsburgh & Ohio Central | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 13 |
RBOX
| Railbox Company | 48 |
SLC
| San Luis Central Railroad Company | 1 |
SLGG
| Progress Rail Services Corporation | 1 |
SLR
| St Lawrence & Atlantic | 13 |
SOU
| Southern | 36 |
SP
| Southern Pacific | 8 |
SRN
| Sabine River & Northern | 3 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TBOX
| TTX Company | 9 |
TOE
| Texas Oklahoma and Eastern RR Company | 4 |
TR
| Tomahawk Railway L.P. | 125 |
TRN
| TRN | 1 |
UP
| Union Pacific Railroad Company | 3 |
VCY
| Galveston Railroad, L.P. | 1 |
VR
| Valdosta Railway | 2 |
WC
| Wisconsin Central | 13 |
WCCL
| Wisconsin Central | 1 |
WCTR
| WCTU Company White City Terminal Railway | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 1 |
YARR
| Youngstown and Austintown Railroad | 2 |
YB
| Youngstown Belt Railroad Company | 28 |
YKLR
| YKLR | 1 |
YKR
| York Rail | 125 |