These people have products or parts that look interesting and might help you.
http://www.kadee.com/ No matter what the scale it’s gota be KADEE
www.rrstoneworks.com stone based modeling products
www.mcwwerks.com Detailed Trestles & Bridges
Chris Walas creations Check his how to section
www.myhobbysupply.com Bird houses that can be used in a Garden Rail Layout
www.gtrainbuildings.com Buildings for your Layout
Pacific Coast Garden Railway Supply Good selection of buildings
www.nemodel.com Garden scale kits for rolling stock
www.brewerplans.com Plans for buildings & Bridges
www.lightrailproducts.com Kits to build streetcars & trolleys
http://www.llagastrack.com/ US prototype gauge 1 flex track
www.nwsl.com motors & gears
Sunset Valley Railroad See these people if you want to lay track yourself
Ozark Miniatures Here are the parts for you to design your own.
Garden-Texture Large selection of buildings, Kits and Parts
Bridge Masters Parts and Kits for Trestles and Bridges
RR Concepts multi scale electronics for automatic control
www.dallee.com electronics
Automatic multi-train control for G Scale plans and pictures good for shows.
Ever wonder where to get Hartland products or if you can get parts, here they are
AMS American Model Supply
I checked all these Web sites and they were operational on February 14, 2010