postalmuseum.si.edu

R5dr1 TiL: In the early days of airmail a pilot, named Dean Smith, was forced to land on a cow causing his plane to wreck. It scared him.
vPEx4 TIL that in 1992 the US Postal service held a vote over whether official stamp of Elvis Presley should depict Elvis as a young man or later in life. After over 1.2 million ballots, young Elvis won with 75% of the vote, and would become one of the most popular commemorative stamps of all time.
OGgJ6 TIL when introduced, there was a conspiracy saying the creation Zip Codes was masked Communism made “to depersonalize or dehumanize” Americans