Here are some links that you may find interesting.
Hobby Shop Links:Pro Custom Hobbies in Eldersburg, Maryland www.procustomhobbies.com
Mainline Hobby Supply in Blue Ridge Summit, Pennsylvania www.mainlinehobby.com
Manufacturers Links:Pocahontas Models LLC www.pocahontasmodels.com
Funaro and Camerlengo www.fandckits.com
Westerfield Golden Age Line http://www.westerfield.biz
Pacific Mountain Scale Shops http://www.pacificmountain.ca/
Reboxx www.reboxx.com
Other Model Railroad Sites and Societies
National Model Railroad Association www.nmra.org
The Baltimore and Ohio Railroad Museum www.borail.org
The Baltimore and Ohio Railroad Historical Society www.borhs.org
The Norfolk and Western Railway Historical Society www.nwhs.org
The Western Maryland Railway Historical Society www.moosevalley.org/wmrhs