A

Accurail

American Limited

American Model Builders

Atlas

Athearn

A-Line

Aztec

B

B.T.S.

Bachmann

Bar Mills

Blair Line

Bowser

Broadway Limited

Boley

Branchline

Badger

C

Caboose Industries

Campbell

Central Valley

Chooch Enterprises

Circuitron

Classic Metal Works

Con-Cor

Con-Cor Structures

City Classics

Centerline

CM Shops

Classic Miniatures

Custom Finishing

D

 Detail Associates

Details West

Dyna Models

Down Town Deco

Durango Press

Digitrax

E

Evergreen Scale Models

Evergreen Hill Design

Eastern Car Works Inc.

F

 Floquil

First Gear

G

GHQ

Grandt Line Products

H

Horizon

Heiser's Models

Heljan

Highliner

I

Imex

Intermountain

International Hobby Corp.

J

JL Innovative

Jay Bee Bennett Enterprises

Jordan Products

K

Kadee

Kalmbach

Kato (USA)

Korber Models

L

Life Like Products

Life Like Proto

LBF Company

LaBelle Industries

Lonestar Models

M

 MV Products Lenses

Micro-Scale

MDC (Roundhouse)

MidWest

Mantua Industries

Miller Engineering

Model Power

MDK, Inc. (K-Line)

N

Northeastern Scale Lumber

NJ International

Norscot

NorthWest Short Line

NuComp Miniatures

O

Oregon Rail Supply

P

PECO

Plastruct

Precision Scale Company

Precision Craft Models

Promotex (Herpa)

Pikestuff

Pirate Models

R

Rix Products

Roundhouse (MDC)

Railway Express Miniatures

Red Caboose

Red Cap Line

Rivarossi

S

Stewart Products

Stewart Hobbies

Sheepscot

Smalltown Structures

Scale Structures. Ltd.

T

Testors

Tichy Train

Tomar Industries

Tower 55

Timberline Scenery Co.

Train Station Products

Train Tronics, Inc.

Trucks N' Stuff

W

Walthers 

Woodland Scenics

Withers Publishing

X

 X-Acto

 Xuron