The FDA approved the first chickenpox vaccine.
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New York City held the world's first St Patrick's Day Parade.
Albert Einstein wrote his first paper on the Quantum Theory of Light.
The 'Night Stalker' serial killer, Richard Ramirez, committed his second and third murders in LA, USA.
The Bee Gees made their first appearance on TV, performing 'Words' and 'To Love Somebody' on the Ed Sullivan Show.
Pink Floyd's 'The Dark Side of the Moon' debuted on Billboard's Top 200 chart.
