Beethoven performed in person for the first time.
He performed the Piano Concerto No. 2 in Vienna, Austria.
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Niagara Falls waterfall stopped flowing due to an ice jam.
The Sunbeam 1000 HP broke the land speed record at the Daytona Beach race track in Florida.
NASA's Mariner 10 became the first spacecraft to reach Mercury.
The 23rd Amendment was ratified, allowing residents of Washington, DC to vote in US elections.
US President Herbert Hoover installed the White House's first telephone.
