April 20 » Pierre and Marie Curie refine radium chloride.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
Day of death May 20, 1922
The temperature on May 20, 1922 was between 7.9 °C and 17.3 °C and averaged 13.3 °C. There was 3.2 hours of sunshine (20%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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.
February 6 » The Washington Naval Treaty is signed in Washington, D.C., limiting the naval armaments of United States, Britain, Japan, France, and Italy.
February 8 » United States President Warren G. Harding introduces the first radio set in the White House.
May 19 » The Young Pioneer Organization of the Soviet Union is established.
May 30 » The Lincoln Memorial is dedicated in Washington, D.C..
November 24 » Nine Irish Republican Army members are executed by an Irish Free State firing squad. Among them is author Erskine Childers, who had been arrested for illegally carrying a revolver.
December 7 » The Parliament of Northern Ireland votes to remain a part of the United Kingdom and not unify with Southern Ireland.
When copying data from this family tree, please include a reference to the origin: Rene Post, "Family tree Post", database, Genealogy Online (https://www.genealogieonline.nl/post-stamboom/I500035.php : accessed March 11, 2026), "Cornelia Post (1902-1922)".
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