First International Sky Train
On May 14, 1935, US and Cuban pilots flew the first international airmail sky train. Inspired by locomotives hauling wagons, this air train consisted of a motored airplane pulling two gliders.
Government
Establishment of Glacier National Park
On May 11, 1910, an act of Congress officially created Glacier National Park in Montana. America’s 10th national park, its been called the “Crown of Continent.”
Birth of Harry Truman
President Harry S. Truman was born in Lamar, Missouri on May 8, 1884. America’s 33rd president, he led America through the final months of WWII and the early years of the Cold War.
Wildlife Conservation Series
On May 5, 1956, the US Post Office issued the first stamp in a 22-year series calling attention to the importance of wildlife conservation.
Pan-American Exposition & Stamps
The Pan-American Exposition opened to the public on May 1, 1901, in Buffalo, New York. That same day the set of six Pan-American stamps went on sale.
Louisiana Purchase Exposition & Stamps
On April 30, 1904, the Louisiana Purchase Exposition opened to the public. The largest fair up to that time, opening day also marked the issue of a set of five stamps commemorating the exposition and the purchase.
Jamestown Exposition
On April 26, 1907, the Jamestown Exposition opened at Sewell’s Point in Norfolk, Virginia. It celebrated the 300th anniversary of the first permanent English settlement in America.
Opening of the St. Lawrence Seaway
On April 25, 1959, the St. Lawrence Seaway opened, connecting the Great Lakes to the Atlantic Ocean. Construction of the St. Lawrence Seaway was nearly as ambitious as the Panama Canal project.
Oklahoma Land Run
On April 22, 1889, the first land rush into the Unassigned Lands of Oklahoma kicked off at high noon. By evening, 50,000 families settled in Oklahoma and two cities were established with populations over 10,000 each.