I know this is going to be a longshot but I figured it was worth a try....
Any of you Washington DC/Suburban Maryland folks remember Farmer Fulk's garden center near the Montgomery County, MD Airpark? It maybe closed circa 2004. They were a garden center, furniture dealer and an LGB Trains dealer?
Anyone have photos of the layout? There was a massive LGB display layout with floor to ceiling mountains, lakes, etc done in the American west theme. As I recall there were about 6 trains running at once? Very impressive and well done display.