- Baltimore Boatbuilding Company
 - Baltimore - Manufacturer of collectible, limited edition wood models of historic steam era boats. - Coast to Coast Coins
- Columbia - Selling collectible rare coins and currency.
- Life-Like Products, Inc.
- Baltimore - Manufactures HO and N scale model trains, buildings, and scenery.
- MTH Electric Trains
- Columbia - Designer and creator of O scale electric trains and model railroading structures and accessories.
- Piermont Division
- Columbia - We repair, modify, paint, buy and sell brass HO.
- Williams Electric Trains
- Columbia - Manufactures O scale locomotives, rolling stock, passenger cars, and cabooses.
|