AEPX
| American Electric Power | 1 |
ATSF
| Atchison Topeka & Santa Fe | 9 |
BN
| Burlington Northern | 13 |
BNSF
| BNSF Railway | 3 |
BO
| Baltimore & Ohio | 2 |
BPRR
| Buffalo and Pittsburgh | 5 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CMHX
| CarMath Incorporated | 11 |
CNW
| Chicago & Northwestern | 3 |
CO
| Chesapeake & Ohio | 1 |
CSUX
| City of Colorado Springs Department of Electric Generation | 2 |
CSX
| CSX Railroad | 214 |
CTRN
| Union Pacific Railroad Company | 16 |
DRGW
| Denver & Rio Grande Western | 44 |
FLCX
| CIT Group/Capital Finance, Inc | 4 |
GACX
| General American Marks Company | 5 |
GBRX
| Greenbrier Leasing Corporation | 3 |
GIHX
| Cornerstone C and M Incorporated d/b/a Gifford Hill and Comp | 5 |
GRR
| Georgetown Railroad Company | 74 |
HLMX
| Helm Financial Corporation | 3 |
HMJX
| HELM Financial Corporation | 2 |
JTSX
| Joseph Transportation Incorporated | 1 |
MP
| Missouri Pacific | 27 |
MTIX
| MIRANT ENERGY TRADING LLC | 2 |
NCUX
| CIT Group/Capital Finance, Inc | 1 |
NDYX
| First Union Rail | 3 |
NYC
| New York Central | 21 |
PEPX
| Potomac Electric Power Company | 82 |
PSR
| Pittsburg and Shawmut Railroad Incorporated | 3 |
SBD
| Seaboard System | 6 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 4 |
SPTX
| Trinity Rail Management Incorporated | 1 |
TCMX
| CIT Group/Capital Finance, Inc | 1 |
TILX
| Trinity Industries Leasing Company | 1 |
TXUX
| TXU Electric | 7 |
UP
| Union Pacific Railroad Company | 63 |
VAPX
| Virginia Power | 1 |
VULX
| Vulcan Materials | 7 |