On March 3, 1879, an Act of Congress authorized the use of Postage Due stamps. These stamps were unique, since they were the first US stamps that didn’t prepay for the delivery of mail. Instead, they denoted the amount of postage to be collected by the person receiving the mail because it was insufficiently prepaid.
On January 28, 2013, the USPS issued the first stamp in its Global Forever Series. These stamps are used on international mail.
On January 8, 1963, Chester Noongwook made his final trip delivering mail in Alaska via dog sled.
On January 7, 1785, mail was carried by an air vehicle for the first time.
On October 10, 1858, the first shipment of overland mail arrived in San Francisco.
On August 17, 1859, the first airmail in the United States was carried by balloon in Indiana, from Lafayette to Crawfordsville.
On August 11, 1862, Wells Fargo inaugurated its Virginia City Pony Express, which carried mail between Nevada mining towns and California business centers.
On July 6, 1894, a San Francisco businessman operated a short-lived bicycle mail route in San Francisco, complete with his own stamps.
On June 22, 1946, US Airmail was carried by jet for the first time.