The emperor of China patented the toothbrush using coarse boar bristles.
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Musical 'Grease' opened at the New London Theatre.
The first Harry Potter book, 'Harry Potter and the Philosopher's Stone,' hit the shelves in the UK.
Fifty countries signed the United Nations Charter in San Francisco.
Same-sex marriage became legal in all 50 states.
Elvis Presley performed his final performance in Indianapolis, Indiana, US.
