Lynne and William Jolitz released the Unix-like operating system 386BSD.
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The French Revolution began when the Parisians invaded Bastille Prison.
Batman's 'The Dark Knight' premiered in London.
English composer Henry Purcell was appointed organist of the Chapel Royal, London.
Ferrari secured its first Grand Prix victory at the 1951 British Grand Prix.
Harper Lee's second novel, 'Go Set a Watchman,' was published.
