HO scale model trains are a significant part of model railroading history, and we can partially credit the overall popularity of model trains with the rise of a convenient, tabletop scale like HO.

The 2'-9" x 8'-2" HO scale shelf layout depicted the ... John Pryke, from Building City Scenery for Your Model Railroad (Kalmbach Books, 2000) As if model railroads aren't cool enough by ...