The first scientific hand-held calculators (HP-35) hit the markets with a hefty price tag at $395.
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Thomas Edison completed the world's first movie studio in West Orange, New Jersey.
NBC-TV premiered ''Late Night with David Letterman."
Mary Queen of Scots received the death sentence from cousin Queen Elizabeth I.
Isaac Briggs & William Longstreet was awarded a patent for the first steamboat in the US.
Martin Luther King Jr. and 250 protestors were arrested.
