Scott Catalog # : 3191a-o / Postal Commemorative Society First Day Covers.
Set includes: 3191a New Baseball Records / 3191b Desert Storm, Gulf War, 1991 / 3191c Seinfeld, Sitcom Sensation / 3191d...
Scott Catalog # : 3187a-o / Postal Commemorative Society First Day Covers.
Set includes: 3187a Polio Vaccine Developed / 3187b Teen Fashions / 3187c The "Shot Heard Round the World" / 3187d US...