ATEX
| Asplundh Tree Expert Co Railroad Division | 1 |
BN
| Burlington Northern | 5 |
BO
| Baltimore & Ohio | 2 |
BSOR
| Buffalo Southern | 1 |
CO
| Chesapeake & Ohio | 3 |
CR
| Conrail | 31 |
CSX
| CSX Railroad | 59 |
EMCO
| EMCO | 1 |
FEC
| Florida East Coast | 10 |
GC
| Georgia Central | 1 |
GREX
| Georgetown Rail Equipment Company | 1 |
KCS
| Kansas City Southern | 2 |
MHWA
| Mohawk Adirondack and Northern Railroad | 1 |
MP
| Missouri Pacific | 7 |
MSRC
| Kansas City Southern | 1 |
NS
| Norfolk Southern | 16 |
NW
| Norfolk & Western | 19 |
NYC
| New York Central | 1 |
RKCX
| Knox Kershaw Incorporated | 3 |
SALV
| SALV | 1 |
SBD
| Seaboard System | 3 |
SOU
| Southern | 19 |
SPMW
| Southern Pacific Maintenance of Way | 9 |
SPSX
| Progress Rail Services Corp | 3 |
SRS
| Sperry Rail Service | 3 |
UP
| Union Pacific Railroad Company | 4 |
WTNN
| West Tennessee | 1 |