The Preservation Artisans Guild Resource page provides a listing of businesses, organizations and informational resources that might be of interest.
National Trust for Historic Preservation
The Early American Industries Association
The Victorian Society in America
The Stained Glass Association of America
The Guild of Oregon Woodworkers
The American Institute for Conservation of Historic & Artistic Works
Old Portland Hardware & Architectural
Schoolhouse Electric & Supply Co.
Aurora Mills Architectural Salvage