April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage May 6, 1926
The temperature on May 6, 1926 was between 2.5 °C and 12.1 °C and averaged 7.0 °C. There was 5.6 mm of rain. There was 7.5 hours of sunshine (49%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
May 22 » Chiang Kai-shek replaces the communists in Kuomintang China.
May 28 » The 28 May 1926 coup d'état: Ditadura Nacional is established in Portugal to suppress the unrest of the First Republic.
June 23 » The College Board administers the first SAT exam.
October 31 » Last issue of the independent Italian newspaper Il Mondo, thereafter suppressed by the Mussolini regime
November 11 » The United States Numbered Highway System is established.
November 25 » The deadliest November tornado outbreak in U.S. history kills 76 people and injures more than 400.
Day of death June 10, 1984
The temperature on June 10, 1984 was between 8.5 °C and 20.9 °C and averaged 13.9 °C. There was 7.4 hours of sunshine (44%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 1 » Brunei becomes independent of the United Kingdom.
February 13 » Konstantin Chernenko succeeds the late Yuri Andropov as general secretary of the Communist Party of the Soviet Union.
March 29 » The Baltimore Colts load its possessions onto fifteen Mayflower moving trucks in the early morning hours and transfer its operations to Indianapolis.
April 19 » Advance Australia Fair is proclaimed as Australia's national anthem, and green and gold as the national colours.
May 27 » The Danube-Black Sea canal is opened, in a ceremony attended by the Ceaușescus. It had been under construction since the 1950s.
October 11 » Aeroflot Flight 3352 crashes into maintenance vehicles upon landing in Omsk, Russia, killing 178.
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The Family tree Mark de Jong publication was prepared by M. de Jong (contact is not possible).
When copying data from this family tree, please include a reference to the origin: M. de Jong, "Family tree Mark de Jong", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-mark-de-jong/I260.php : accessed February 28, 2026), "Wilhelmina Johanna (Mien) Versteeg (1897-1984)".
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