Harper Lee’s second novel, “Go Set a Watchman,” was published.
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A patent was granted to Robert Goddard for a liquid-filled rocket.
The Everly Brothers broke up after Phil Avery smashed guitar and stormed off stage.
Lynne and William Jolitz released the Unix-like operating system 386BSD.
Ferrari secured its first Grand Prix victory at the 1951 British Grand Prix.
NASA's New Horizons space probe completed the first flyby of Pluto in the history of human spaceflight.
