| Accurail |
| American Limited Models |
| American Model Builders |
| Athearn |
| Atlas |
| Bachmann |
| Boley |
| Caboose Industries |
| California Freight & Detail |
| Cannon & Company |
| Circuitron |
| Classic Metal Works |
| Con Cor |
| Con Cor Route 66 |
| Creative Model Associates |
| Detail Associates |
| Details West |
| Dimi Trains |
| Eastern Car Works |
| GHQ Roadmasters |
| Gold Medal Models |
| Heljan |
| Herpa |
| Ibenlite |
| IHC |
| Kadee |
| Kato USA |
| La Belle |
| Life Like (Proto) |
| Lineside Model/Vacucast |
| Lionel |
| M. V. Lenses |
| Master Rail Models |
| Microscale |
| Midwest Cork |
| Model Die Casting |
| Model Power |
| MRC |
| NJ International |
| Oregon Rail Supply |
| Peco c/o Euro Rails |
| Plano |
| Pre-Size Model Specialties |
| Proto Power West |
| Railway Express Miniatures |
| Rivarossi |
| S&S Hobby Products |
| Scale Replicas |
| SS Limited |
| Stewart |
| Sunlit Vistas |
| Sunrise |
| Tichy Train Group |
| Tires & Tracks |
| Train Station Products |
| Woodland Scenics |
| Xuron |
