January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
May 22 » The Associated Press is formed in New York City as a non-profit news cooperative.
May 24 » Second Boer War: The United Kingdom annexes the Orange Free State.
Day of marriage April 20, 1922
The temperature on April 20, 1922 was between 0.1 °C and 12.5 °C and averaged 6.8 °C. There was 10.7 hours of sunshine (75%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 20 » The USSLangley is commissioned as the first United States Navy aircraft carrier.
April 20 » The Soviet government creates South Ossetian Autonomous Oblast within Georgian SSR.
July 1 » The Great Railroad Strike of 1922 begins in the United States.
July 15 » Japanese Communist Party is established in Japan.
August 26 » Greco-Turkish War (1919–22): Turkish army launched what has come to be known to the Turks as the "Great Offensive" (Büyük Taarruz). The major Greek defense positions were overrun.
December 16 » President of Poland Gabriel Narutowicz is assassinated by Eligiusz Niewiadomski at the Zachęta Gallery in Warsaw.
Day of death June 10, 1975
The temperature on June 10, 1975 was between 11.1 °C and 25.6 °C and averaged 19.0 °C. There was -0.1 mm of rain. There was 10.6 hours of sunshine (64%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 30 » The Monitor National Marine Sanctuary is established as the first United States National Marine Sanctuary.
April 30 » Fall of Saigon: Communist forces gain control of Saigon. The Vietnam War formally ends with the unconditional surrender of South Vietnamese president Dương Văn Minh.
May 30 » European Space Agency is established.
June 20 » The film Jaws is released in the United States, becoming the highest-grossing film of that time and starting the trend of films known as "summer blockbusters".
August 23 » The Pontiac Silverdome opens in Pontiac, Michigan, 30 miles (48km) northwest of Detroit, Michigan
November 22 » Juan Carlos is declared King of Spain following the death of Francisco Franco.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I6308.php : accessed February 9, 2026), "Maria Ludowika Klein (1900-1975)".
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