For those people interested in more detailed information on 19th and 20th centur
y material culture, the following web site provides addresses for antique collec
tor's societies:
 
http://www.collectoronline.com/collect/club-directory.html#milk
 
Some of the groups have web sites, most don't.
 
Of interest to some may be the Tobacco Tin Tag Collectors Club (tags were recent
ly discussed here).