AEX
| Andersons | 1 |
AM
| Arkansas & Missouri | 3 |
ATSF
| Atchison Topeka & Santa Fe | 9 |
BN
| Burlington Northern | 4 |
BNBX
| Greenbrier Management Services, LLC | 1 |
BNSF
| BNSF Railway | 11 |
CAEG
| Coffeen and Western | 13 |
CBQ
| Chicago Burlington & Quincy | 5 |
CMO
| Chicago St Paul Minneapolis & Omaha | 4 |
CNA
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 4 |
CPC
| CPC | 1 |
CSX
| CSX Railroad | 1 |
CTRN
| Union Pacific Railroad Company | 4 |
DRGW
| Denver & Rio Grande Western | 5 |
EL
| Erie Lackawanna | 1 |
GBW
| Green Bay & Western | 1 |
GREX
| Georgetown Rail Equipment Company | 1 |
HYWX
| Georgia Power Company | 1 |
KPLX
| Western Resources Incorporated (Kans.) | 3 |
MP
| Missouri Pacific | 6 |
MPSX
| Missouri Public Service | 3 |
OMAX
| Omaha Public Power District | 1 |
RBMN
| Reading Blue Mountain & Northern | 3 |
SOU
| Southern | 1 |
UCEX
| Union Electric Company | 3 |
UP
| Union Pacific Railroad Company | 2 |
WFAX
| Western Fuels Association Incorporated (Colo.) | 3 |
WP
| Western Pacific | 1 |