AEX
| Andersons | 3 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 2 |
CNW
| Chicago & Northwestern | 4 |
CR
| Conrail | 47 |
CSX
| CSX Railroad | 19 |
CTRN
| Union Pacific Railroad Company | 23 |
DLW
| Delaware Lackawanna & Western | 1 |
DRGW
| Denver & Rio Grande Western | 16 |
EL
| Erie Lackawanna | 15 |
GABX
| General American Marks Company | 26 |
GACX
| General American Marks Company | 13 |
GCCX
| General American Marks Company | 1 |
GRCX
| Granite Rock Company | 1 |
GVSR
| Galveston Railroad L.P. | 1 |
HCSX
| Helm Chesapeake LLP | 27 |
HLMX
| Helm Financial Corporation | 11 |
LBR
| Lowville and Beaver River Railroad Compa | 2 |
LWAX
| Laidlaw Environmental Services | 1 |
MEC
| Maine Central | 1 |
MP
| Missouri Pacific | 12 |
MWNX
| MWNX | 2 |
NDW
| NDW | 6 |
NHN
| New Hampshire Northcoast Corporation | 3 |
NS
| Norfolk Southern | 76 |
NW
| Norfolk & Western | 21 |
NYC
| New York Central | 2 |
OFOX
| RESIDCO | 1 |
PC
| Penn Central | 1 |
PMRX
| Progress Metal Reclamation Company | 1 |
PPLX
| Pennsylvania Power and Light Company | 4 |
PRR
| Pennsylvania Railroad | 2 |
PW
| Providence and Worcester | 4 |
RBMN
| Reading Blue Mountain & Northern | 332 |
RDG
| Reading Railroad | 1 |
RMGX
| Andersons - Railgroup | 1 |
SOU
| Southern | 43 |
SP
| Southern Pacific | 3 |
UP
| Union Pacific Railroad Company | 26 |
VGN
| Virginian Railway | 1 |
WIMX
| Wimpey Minerals USA, Inc. | 2 |
WRRC
| Western Rail Road Company | 1 |