I hope you will find these links helpful. 
American Museum of Radio and Electricity
American Wireless Association
Antique Radio Club of Illinois
Antique Radio (The Collector's Resource)
Arizona Antique Radio Club
California Historical Radio Society
Canadian Vintage Radio Society
Central Ohio Antique Radio Association
CRC (Colorado) Antique Radio Club
Dayton Ohio Hamvention
Delaware Valley Historic Radio Club (Philadelphia, PA area)
Florida Antique Wireless Group
Iggy's World of Radio
Indiana Historical Radio Society
K9YA Telegraph Newsletter
Lithuania Radio Museum, lots of European Radios
Michigan Antique Radio Club
Mid-America Antique Radio Club
Mid-Atlantic Antique Radio Club
Midwest Radio Museum. A museum dedicated to the Midwest brand of radios.
Memphis Antique Radio Club
Museum of Radio and Technology Links. Lots of good stuff here.
Naval Postgraduate School Amateur Radio Club
New England Antique Radio Club
New Jersey Antique Radio Club
Northland Antique Radio Club
Norwegian Historical Radio Society
Old Radio Clubs (UK)
Orange County Amateur Radio Club
Phil's Old Radio Links
Pittsburg Antique Radio Society
Puget Sound Antique Radio Association
Radio Exchange Club Listings
Southeastern Antique Radio Society
Southern California Antique Radio Society
SPARC Antique Radio Club
Texas Antique Radio Club
The Collectors Weekly. A great resource for current radio pricing!
The Schenectady Antique Radio Club
