Harper Lee’s second novel, “Go Set a Watchman,” was published.
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Batman's 'The Dark Knight' premiered in London.
The Everly Brothers broke up after Phil Avery smashed guitar and stormed off stage.
Alpinists reached the summit of Matterhorn for the first time.
American outlaw Billy the Kid, also known as William H, Bonney was shot dead by police.
Ferrari secured its first Grand Prix victory at the 1951 British Grand Prix.
