First Overland Mail Delivery
On October 10, 1858, the first shipment of overland mail arrived in San Francisco.
On October 10, 1858, the first shipment of overland mail arrived in San Francisco.
On September 29, 1967, the U.S. Post Office issued its first attached pair of stamps to have a continuous design.
On September 22, 1956, the U.S. Post Office issued its first commemorative stamp on colored paper.
On September 21, 1948, the U.S. Post Office issued the Gold Star Mothers stamp to honor mothers whose sons had been killed in war.
On September 18, 1997, the USPS issued the U.S. Air Force stamp, the first U.S. stamp to have a hidden image using Scrambled Indicia.
On September 15, 1997, the USPS issued a stamp whose vignette consisted entirely of microprinting.
On September 13, 1886, a group of stamp collectors met in New York City to establish what would become the American Philatelic Society.
On September 9, 1969, the U.S. Post Office issued its first ever jumbo-sized commemorative stamp.
On September 1, 1923, George Linn produced the first cacheted First Day Covers, giving birth to the modern FDC industry.