I'm not sure this link will work for you but ebay have forums setup on different topics. This one is on advertising paperweights-I have the Richard "Dick" Holiner paperweight collection of over 950+ paperweights and this site has super information by the experts on the topic..Take a look...
http://groups.ebay.com/forum/Advertising-Amp-Souvenir/Home/1600007080
http://groups.ebay.com/forum/Advertising-Amp-Souvenir/Home/1600007080
