London Bridge, designed by Lord Holford, was officially opened by Queen Elizabeth II.
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Pink Floyd's 'The Dark Side of the Moon' debuted on Billboard's Top 200 chart.
New York City held the world's first St Patrick's Day Parade.
The 'Night Stalker' serial killer, Richard Ramirez, committed his second and third murders in LA, USA.
NASA launched the Vanguard I satellite.
The UK, the Netherlands, Belgium, Luxembourg, and France signed the Treaty of Brussels.
