The Soo Locks
On June 18, 1855, the first ship passed through the Soo Locks, located on the St. Mary’s River between Lake Superior and Lake Huron. Today there are four locks, and an average of 10,000 ships pass through them each year.
This Day in History
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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 Woman in Space
On June 16, 1963, Valentina Tereshkova became the first woman in space. The 26-year-old former textile worker circled Earth 48 times during a demanding solo flight that lasted nearly three days.
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The Second Battle of Petersburg
On June 15, 1864, Ulysses S. Grant launched the Siege of Petersburg. The long struggle that followed stretched Union and Confederate forces across miles of trenches and helped decide the final months of the Civil War.
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The Bear Flag Revolt
On June 14, 1846, California settlers staged the Bear Flag Revolt in rebellion against the Mexican government. Their handmade flag, painted with a grizzly bear and a single star, gave the short-lived California Republic its symbol and later inspired the state flag still used today.
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First U.S. Diamond Stamps
On June 13, 1974, the US issued its first stamps designed in a diamond format, honoring America’s Mineral Heritage. The four bright 10¢ stamps turned ordinary minerals into miniature works of art and gave rock collectors a long-awaited place in US postal history.
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Death of Medgar Evers
On June 12, 1963, civil rights activist Medgar Evers was killed while standing in his own driveway. As Mississippi’s first NAACP field secretary, Evers led voter registration drives, investigated racial violence, pushed to desegregate schools and public spaces, and became one of the state’s most visible voices for justice.
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USS Missouri Commissioned
On June 11, 1944, the USS Missouri was commissioned into the US Navy, giving America one of the most powerful battleships ever built. Within 15 months, the ship known as “Mighty Mo” would help fight the last major battles of World War II and host the ceremony that formally ended the war.
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BEP Produces Its Last U.S. Stamp
On June 10, 2005, the Bureau of Engraving and Printing (BEP) printed its last US stamp. The Bureau first began printing US postage stamps in 1894 and for 75 years, printed nearly all US stamps.
