Apple Inc became the largest company in the world.
On this day, its value reached over $600 billion.
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Paul McCartney announced he would leave The Beatles.
Halley's Comet made its closest approach to Earth in recorded history.
Arbor Day was celebrated for the first time in America in Nebraska.
A 14-year-old girl performed the world's first human cannonball in London, England.
Walter Hunt patented the safety pin.
