Timeline: The Postal Service And Its Competition Over the past 100 years, the U.S. Postal Service has met a slew of formidable challengers from the telephone to the Internet. In recent years, the Postal Service has seen a sharp decline in mail. Follow the history of mail and the U.S. Postal Service over the past century in this interactive timeline.
NPR logo Timeline: A Century Of Mail (1910-2010)