Three Decades Of Model Railroading Excellence. Thirty-one years ago, the three rail O gauge hobby consisted mainly of restoring and running postwar Lionel® trains. Thirty-one years ago, the most elaborate way to run three-rail trains was a rebuilt ZW transformer. Thirty-one years ago, a twenty-year-old named Mike Wolf opened a toy train mail order business in a bedroom of his parents' home. At train shows, customers approaching his table didn't realize he was the business owner, and often asked to speak with his father.