ABOX
| TTX Company | 2 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 4 |
BCLR
| Bay Colony | 1 |
BKTY
| Union Pacific Railroad Company | 4 |
BLHX
| SMBC RAIL SERVICES LLC | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 9 |
CAMY
| CAMP CHASE RAILWAY COMPANY, LLC | 1 |
CIC
| Cedar Rapids & Iowa City | 1 |
CLSX
| Cargill Incorporated Salt Division | 1 |
CN
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 6 |
COER
| Crab Orchard & Egyptian | 2 |
CP
| Canadian Pacific Railway | 2 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 6 |
DRGW
| Denver & Rio Grande Western | 4 |
DWC
| Canadian National Railways | 9 |
FBOX
| TTX Company | 5 |
FXE
| Ferromex | 4 |
GTW
| Grand Trunk Western | 3 |
HS
| H and S Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 9 |
IC
| Illinois Central | 1 |
ITFX
| INFINITY TRANSPORTATION III LLC | 1 |
KCS
| Kansas City Southern | 2 |
LRS
| Laurinburg and Southern | 5 |
LVRR
| Lycoming Valley | 2 |
MB
| Meridian & Bigbee | 1 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 11 |
MWCX
| Midwest Railcar Corporation | 7 |
NADX
| General Electric Rail Services | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 6 |
NYC
| New York Central | 5 |
SGLR
| Seminole Gulf | 2 |
SLSF
| Saint Louis-San Francisco | 4 |
SNC
| Saratoga & North Creek Railway | 1 |
SOU
| Southern | 2 |
SP
| Southern Pacific | 23 |
SRN
| Sabine River & Northern | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 2 |
TBCX
| Boeing Company | 1 |
TBOX
| TTX Company | 17 |
TILX
| Trinity Industries Leasing Company | 1 |
TIMX
| Trinity Industries Leasing Company | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 2 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 2 |
WFRX
| WELLS FARGO RAIL CORPORATION | 1 |
WP
| Western Pacific | 1 |
WRWK
| Providence & Worchester Railroad | 3 |
WSOR
| Wisconsin & Southern | 1 |