Blenko Collectors
Bruce & Bonnie’s Unofficial Akro Agate Collectors Page
Cambridge Glass Collectors
The Contemporary Carnival Glass
Early American Pattern Glass Society (EAPGS)
Fostoria Glass Society of America
Heisey Collectors of America, Inc. (HCA)
Indiana Glass Company
International Paperweight Society
International Perfume Bottle Association, Inc. (IPBA)
Les Cristalleries du Val Saint-Lambert
National American Glass Club Ltd (NAGC)
National Fenton Glass Society (NFGS)
National Greentown Glass Association
National Imperial Glass Collectors Society (NIGCS)
National Toothpick Holder Collectors Society
National Westmoreland Glass Collectors’ Club (NWGCC)
The Glass Circle (London, England)
Tiara Glass
Tiffin Glass Collectors Club
Woodsland Carnival Glass (WWW.CGA)