Model Railroading at About.com
- Learn all about model railroading, HO scale model building, detailing and scenicking, as well as the history of the pastime.
- http://modelrailroad.about.com/index.htm

HOrailroading
- Information and discussion of all topics related to HO scale model railroads. Includes a message board, feature articles, and links to other sites.
- http://www.horailroading.net