2020 - The Great American Stamp Show Previous event Event List Next event Thursday, Aug 20, 2020 - Sunday, Aug 23, 2020 Location: Connecticut Convention Center 100 Columbus Boulevard Hartford, CT 06103 134th Annual American Philatelic Society stamp show. Co-hosted with the American Topical Association. Join us for one of the largest stamp and postal history shows in the world. The free event is co-sponsored by the United States Postal Service.