The temperature on April 18, 1889 was about 10.0 °C. The air pressure was 2 kgf/m2 and came mainly from the west. The airpressure was 76 cm mercury. The atmospheric humidity was 88%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
January 22 » Columbia Phonograph is formed in Washington, D.C.
March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
April 1 » The University of Northern Colorado was established, as the Colorado State Normal School.
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: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I31504.php : accessed February 20, 2026), "Emmi Betsij Marie Kok (1889-????)".
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