ACL
| Atlantic Coast Line | 6 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 2 |
CNW
| Chicago & Northwestern | 4 |
CP
| Canadian Pacific Railway | 2 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 6 |
DCLX
| Dow Chemical Canada Incorporated | 1 |
DOWX
| Dow Chemical Company | 2 |
DRGW
| Denver & Rio Grande Western | 1 |
GACX
| General American Marks Company | 1 |
GLC
| Great Lakes Central Railroad | 1 |
HLMX
| Helm Financial Corporation | 1 |
ICG
| Illinois Central Gulf | 1 |
MILW
| Milwaukee Road | 1 |
MKT
| Missouri-Kansas-Texas | 2 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NRLX
| CIT Group/Capital Finance, Inc | 3 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 2 |
PC
| Penn Central | 1 |
RCCX
| Roanoke Cement Co. LLC | 1 |
SCL
| Seaboard Coast Line | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOU
| Southern | 1 |
TILX
| Trinity Industries Leasing Company | 1 |
UP
| Union Pacific Railroad Company | 2 |
WP
| Western Pacific | 2 |
WW
| Winchester & Western | 1 |