January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
May 6 » The Eiffel Tower is officially opened to the public at the Universal Exposition in Paris.
May 11 » An attack upon a U.S. Army paymaster and escort results in the theft of over $28,000 and the award of two Medals of Honor.
June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.
November 8 » Montana is admitted as the 41st U.S. state.
When copying data from this family tree, please include a reference to the origin: Martien Mantel, "Genealogy N.P. Mantel", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-mantel/I53055.php : accessed May 6, 2024), "Geertruida de Groot (± 1860-????)".
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