Discovery of the Inverted Jenny
On May 14, 1918, stamp collector William Robey discovered the rare Inverted Jenny error sheet. One of the most famous US stamp errors, he found the only known sheet to reach public hands.
Flight
First Flight of the Space Shuttle Endeavour
On May 7, 1992, the Space Shuttle Endeavour embarked on its first mission, STS-49. America’s fifth and final operational shuttle, it would go on to fly 122,883,151 miles and spend 299 days in space.
Opening of Seattle World’s Fair
On April 21, 1962, the Seattle World’s Fair, also known as the Century 21 Exposition, opened to the public. The fair’s themes of space and the future helped to make it a tremendous success – one of the few to turn a profit.
Graf Zeppelins Issued
On April 19, 1930, three special airmail stamps, the Graf Zeppelins, were made available for sale to be used exclusively on mail carried via the Graf Zeppelin on its European-Pan American flights the following month.
Doolittle Raid
On April 18, 1942, Jimmy Doolittle led a daring raid against the Japanese in retaliation for the attack on Pearl Harbor.
Panama-Pacific Exposition
On February 20, 1915, the Panama-Pacific Exposition opened in San Francisco, California. The expo was a celebration of the city and the Panama Canal.
Death of Billy Mitchell
On February 19, 1936, Billy Mitchell died in New York City. He’s often considered the father of the United States Air Force, having dedicated much of his career promoting air power in warfare.
First Contract Airmail Flight
On February 15, 1926, the first contract airmail flight was made between Michigan and Ohio. Three stamps were issued for this service during its first two years.
Happy Birthday Chuck Yeager
The first person to break the sound barrier, Chuck Yeager was born on February 13, 1923, in Myra, West Virginia. He was also a WWII dogfighter and commanded fighter squadrons in Vietnam.