March 1 » Henri Becquerel discovers radioactive decay.
March 2 » The Battle of Adwa: The Italian Army defeated by the Ethiopian Army in Adwa, Tigray, Ethiopia.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
July 28 » The city of Miami, Florida is incorporated.
August 17 » Bridget Driscoll became the first recorded case of a pedestrian killed in a collision with a motor car in the United Kingdom.
December 30 » Canadian ice hockey player Ernie McLea scores the first hat-trick in Stanley Cup play, and the Cup-winning goal as the Montreal Victorias defeat the Winnipeg Victorias 6–5.
Day of death May 10, 1971
The temperature on May 10, 1971 was between 5.5 °C and 22.2 °C and averaged 14.2 °C. There was -0.1 mm of rain. There was 11.9 hours of sunshine (77%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
February 8 » The NASDAQ stock market index opens for the first time.
February 24 » The All India Forward Bloc holds an emergency central committee meeting after its chairman, Hemantha Kumar Bose, is killed three days earlier. P.K. Mookiah Thevar is appointed as the new chairman.
April 19 » Charles Manson is sentenced to death (later commuted to life imprisonment) for conspiracy in the Tate–LaBianca murders.
July 5 » The Twenty-sixth Amendment to the United States Constitution, lowering the voting age from 21 to 18 years, is formally certified by President Richard Nixon.
August 10 » The Society for American Baseball Research is founded in Cooperstown, New York.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I81867.php : accessed October 10, 2026), "Egbert van der Velde (1896-1971)".
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