Postal Savings Officials
On December 22, 1910, the US Post Office Department issued its first Postal Savings Official Mail stamp.
Stamp Series
Holiday Celebrations Series
On October 22, 1996, the USPS issued its first stamp honoring Hanukkah, which was also the first stamp in the Holiday Celebrations Series.
American Folklore Series
On September 24, 1966, the US Post Office introduced the American Folklore Series.
Performing Arts Series
On May 24, 1978, the USPS issued the first stamp in the Performing Arts Series, honoring Jimmie Rodgers.
Looney Tunes Series and the Rare Bugs Bunny Imperforate Sheet
On May 22, 1997, the USPS issued the first stamp in the Looney Tunes Series, honoring Bugs Bunny.
Wildlife Conservation Series
On May 5, 1956, the US Post Office issued the first stamp in a 22-year series calling attention to the importance of wildlife conservation.
American Scientists Series
On May 4, 2005, the USPS issued the first set of stamps in the American Scientists Series.
World’s Columbian Exposition
On May 1, 1893, the World’s Columbian Exposition opened in Chicago, Illinois.
Short-Lived Mini-Scapes Series
On February 3, 1990, the USPS issued the first of three stamps in the brief Mini-Scapes Series.