If you are looking for Fruit Jars and related information I suggest you connect with Greg Spurgeon who directs North American Glass. I signed up and receive email notes for all his auctions which are primary centered around Fruit Jars. There are other areas represented so you need to keep an eye on his auction news.
It seems like Greg is the man for selling Fruit Jars. I really enjoy watching the variety of jars that continually show up on his web site.