Word: vinlanda
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Dates: during 1980-1989
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...Davis team persuaded Yale University, which owns the controversial Vinland map, to fly it to Davis, where it was subjected to the proton beam. The map, supposedly dating to around 1440, created a sensation when it was revealed in 1965 because it showed part of North America, labeled VINLANDA INSULA. It seemed to be the first cartographic evidence that Europeans had visited the continent before the time of Columbus. In 1974, however, some particles of ink from the map were found to be titanium-based. This meant, experts said, that the ink was of 20th century vintage...
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