Lynne and William Jolitz released the Unix-like operating system 386BSD.
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Alpinists reached the summit of Matterhorn for the first time.
During an interview with CBS, Donald Trump stated that the European Union is his biggest foe.
Batman's 'The Dark Knight' premiered in London.
Harper Lee's second novel, 'Go Set a Watchman,' was published.
English composer Henry Purcell was appointed organist of the Chapel Royal, London.
