The Military Postal Express Service
On May 9, 1918, the US War Department created the Military Postal Express Service (MPES) to handle military mail in Europe during World War I. It was the first postal system in the world to be created by an Army.
Mail Delivery
Postmaster Lincoln
On May 7, 1833, future President Abraham Lincoln took a job as postmaster for New Salem, Illinois. Holding that position for three years, he was well-liked and respected for his commitment to his postal customers.
Special Occasions Stamps
On April 20, 1987, the USPS issued the set of eight Special Occasions stamps, the first “special” stamp booklet.
Guam Guard Mail Stamps
On April 8, 1930, Guam Guard Mail stamps were introduced for inter-island mail. Issued in small numbers, they were only in use for a year.
First U.S. Mail Classification Act
On March 3, 1863, Congress passed an act establishing three classes of mail to simplify a complicated system that included over 300 different rates.
National Letter Writing Week
On February 25, 1980, the USPS issued a set of stamps commemorating National Letter Writing Week. Those stamps marked the first time that the USPS issued a sheet of stamps with three sets of vertical pairs.
The Electric-Eye Perforator
On February 5, 1935, the US Post Office delivered its first stamps produced using the new electric-eye perforator. This new machine helped ensure better centering of stamps and resulted in a dramatic decrease in waste.
The 1991 Make-Up Rate Stamp
On January 22, 1991, the USPS issued a 4¢ stamp to “make-up” the difference between the old 25¢ rate and the new 29¢ rate. While it was criticized for its lack of design, was the first non-denominated stamp of its kind.
First Flown Letter in America
On January 9, 1793, Jean-Pierre Blanchard carried the first letter by hot air balloon in America. The letter came from President George Washington, an avid balloon enthusiast.