Template:Selected anniversaries/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.
1895: Havelock and Herman Hollerith announce plan to collaborate on new data exchange protocol.
1890: The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
2017: Egg Tooth Neighborhood Association invites Egg Tooth to speak at conference on monsters.