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1455
Gutenberg publishes the first full length book
The Gutenberg Bible was among the earliest major books printed using mass-produced movable metal type in Europe. -
May 10, 1508
Michelangelo starts working on the ceiling of the Sistine Chapel
In 1508 the pope returned to Rome victorious and summoned Michelangelo to begin work on the ceiling. The contract was signed on 10 May 1508.