People have modeled the Denver, South Park & Pacific and its successor Colorado & Southern. Others have modeled the Maine 2-footers. And these people have done these models in many different scales.
But most people will concentrate on one or the other and not try to combine the two totally different and diverse railroads.
How one person who has combined two different and diverse roads is Linn Moedinger who has both the Rio Grande Southern and the East Broad Top on his HOn3 layout.
Railroad Model Craftsman had a story about his layout in its January, 2009 issue.
Brian Norden