The Great American Stamp Show (GASS) is the largest national postage stamp show in the country. The show is co-hosted by the American Philatelic Society, American Topical Association, and the American First Day Cover Society.

The free event is co-sponsored by the United States Postal Service which will also have a large retail presence and host the first day of an issue during the show. Whether you are a new or experienced collector, the Great American Stamp Show packs four days of philatelic fun for the whole family.