Every year postcard shows are sponsored by Clubs and Dealers all over the country in most every state.
Some cities have more than one show a year.
Postcard Collector and Barr's Post Card News publish a schedule of shows well in advance. Most return year after year to the same locations and develop loyal followings of collectors. There are usually several million cards at each show. For a collector it's like being a kid in a candy store. More information on this show can be found elsewhere on this site.