Start of Railway Mail Service
On August 28, 1864, the US Post Office Department created the Railway Mail Service. It revolutionized mail delivery for a century.
Mail Delivery
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Boyd’s City Express Post
On June 17, 1844, Boyd’s City Express Post opened in New York City, offering residents a faster alternative for sending letters across the growing metropolis. Despite decades of government efforts to restrict private mail services, Boyd’s continued making deliveries for more than 40 years.
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First US Aerogram
On April 29, 1947, the United States issued its first aerogram, then called an air letter sheet. It was a simple folded sheet of paper, but it offered Americans a cheaper and faster way to send personal messages overseas in the growing age of air travel.
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Service Indicator Stamps
On April 23, 1976, the USPS issued the first regular postage stamp to include a service indicator. While most Americans would never use it or notice it, the 7.9-cent Drum coil stamp quietly solved a problem that had complicated bulk mailing for decades.
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Charles Lindbergh, Airmail Pilot
On April 15, 1926, Charles Lindbergh made his first airmail flight, launching a new contract route between Chicago and St. Louis. Just over a year later, that same young pilot would become world famous—but on this morning, he was focused on carrying the mail safely and on schedule.
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Arming Postal Clerks
On April 9, 1921, Postmaster General Will H. Hays took an extraordinary step: he ordered the arming of postal workers who handled the nation’s most valuable mail. The order came after a sharp rise in armed robberies, when trains, mail cars, and postal employees had become targets for thieves looking for cash, securities, and registered mail.
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First Stamp Canceling Machine
On March 28, 1876, a Boston inventor received a patent that would transform the way America handled its mail. The Leavitt canceling machine didn’t just speed up a mundane postal task — it helped launch the modern era of mail processing. And it arrived at exactly the right moment.
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First Known Mail Delivered by Air
On January 7, 1785, the sky briefly became part of the postal system. In a daring balloon flight watched by astonished crowds, mail was carried through the air for the first time, marking a bold experiment in communication and transportation that captured the imagination of the world.
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Pony Express Service Ends
After just eighteen months of daring rides across the American frontier, the Pony Express ceased operations on October 26, 1861. Though short-lived, it became one of the most legendary chapters in the history of the American West.
