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Gnomon Chronicles is a work of fiction and nonfiction by Karl Jones (nonfiction).

On This Day in History: June 1

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  1633: Astronomer and academic Geminiano Montanari born. He will make the observation that Algol in the constellation of Perseus varies in brightness.

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  1849: Territorial Governor Alexander Ramsey declared the Territory of Minnesota officially established.

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  1867: Mathematician Karl Georg Christian von Staudt dies. He used synthetic geometry to provide a foundation for arithmetic.

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  1895: Havelock and Herman Hollerith announce plan to collaborate on new data exchange protocol.

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  1890: The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.

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  1944: First successful run of the improved Colossus Mark 2 computer], just in time for the Normandy landings on D-Day. Colossus Mark 2 used shift registers to quintuple the processing speed.

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