Penny Drucker
The National organization for collectors of Imperial Glass. If this is the company that made your pattern, you should visit and consider joining the organization.
National Cambridge Collectors, Inc.
A "must join" group for serious collectors of Cambridge glassware. They sponsor a museum, have a monthly newsletter, and they also offer excellent books on various topics related to Cambridge glass.
Fostoria Glass Collectors, Inc.
This is the Fostoria club for Southern California, although you can join from anywhere in the country. Their newsletter is first class, and they have monthly meetings all over Southern California. The web site is fairly new, but there is a lot of information there. Try it.
National Depression Glass Association
A National organization for collectors of both "Elegant" and regular Depression Glass. The Annual Convention for 2001 will be held in Salem, Oregon, for the first time ever. For more information on the convention and the organization itself, visit: http://www.NDGA.net
The Fostoria Glass Society of America
This is the National organization for Fostoria collectors. Good information on new "American" pattern pieces, a monthly newsletter and an annual convention in Moundsville, WV. Books available here, too.
Heisey Collectors of America, Inc.
The National organization for Heisey collectors. They sponsor a yearly convention, have a wonderful museum, and a monthly newsletter. If you're a Heisey collector, you should visit this site. Books available.
The National organization for collectors of glass made by the Duncan and Miller Glass Company. You should consider joining this group if your pattern was made by Duncan and Miller.