ARR
| Alaska Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 5 |
BN
| Burlington Northern | 2 |
CO
| Chesapeake & Ohio | 1 |
CP
| Canadian Pacific Railway | 5 |
CR
| Conrail | 2 |
CREX
| Citicorp Railmark, Inc | 1 |
DODX
| Department Of Defense | 15 |
FALX
| Falk Corporation | 1 |
GTW
| Grand Trunk Western | 1 |
HTTX
| TTX Company | 1 |
IHB
| Indiana Harbor Belt | 3 |
ITTX
| TTX Company | 1 |
LGAX
| Lockheed-Georgia Co. | 1 |
MILW
| Milwaukee Road | 3 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 1 |
MTTX
| TTX Company | 17 |
OTTX
| TTX Company | 2 |
PLE
| Pittsburgh & Lake Erie | 1 |
RDG
| Reading Railroad | 1 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 1 |
TMCX
| TMCX | 2 |
TTAX
| TTX Company - Spine Cars | 1 |
TTFX
| TTX Company | 2 |
TTOX
| TTX Company | 1 |
TTUX
| TTX Company | 3 |
TTWX
| TTX Company | 1 |
TTX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 1 |
USAX
| United States Army | 2 |
WM
| Western Maryland | 1 |
WP
| Western Pacific | 1 |