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United States Postal Service

independent agency of the U.S. federal government responsible for providing postal service

7 dated entries naming United States Postal Service, drawn from 7 separate years between 1792 CE and 1986 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

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18th century

  • 1792February 20 – The Postal Service Act, establishing the United States Post Office Department, is signed by President George Washington.source

19th century

  • 1825The United States Postal Service starts a dead letter office.source

20th century

  • 1918May 15 – The United States Post Office Department begins the world's third regular airmail service, between New York City, Philadelphia and Washington, D.C.source
  • 1920June 13 – The United States Post Office Department rules that children may not be sent via parcel post.source
  • 1959June 8 – The USS Barbero and United States Postal Service attempt the delivery of mail via Missile Mail.source
  • 1963July 1 – ZIP codes are introduced by the United States Postal Service.source
  • 1986August 20 – In Edmond, Oklahoma, United States Postal Service employee Patrick Sherrill guns down 14 of his coworkers before committing suicide.source

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