May 29 » In the May Coup, Alexander I, King of Serbia, and Queen Draga, are assassinated in Belgrade by the Black Hand (Crna Ruka) organization.
June 11 » A group of Serbian officers stormed the royal palace and assassinated King Alexander Obrenović and his wife, Queen Draga.
June 16 » Roald Amundsen leaves Oslo, Norway, to commence the first east–west navigation of the Northwest Passage.
July 23 » The Ford Motor Company sells its first car.
September 27 » The Wreck of the Old 97, an American rail disaster that became the subject of a popular ballad.
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
Day of marriage August 20, 1923
The temperature on August 20, 1923 was between 12.3 °C and 16.4 °C and averaged 14.5 °C. There was 3.2 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
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 Arts Club of Chicago hosts the opening of Pablo Picasso's first United States showing, entitled Original Drawings by Pablo Picasso, becoming an early proponent of modern art in the United States.
April 15 » Insulin becomes generally available for use by people with diabetes.
June 27 » Capt. Lowell H. Smith and Lt. John P. Richter perform the first ever aerial refueling in a DH.4B biplane.
July 1 » The Parliament of Canada suspends all Chinese immigration.
September 29 » The French Mandate for Syria and the Lebanon takes effect.
October 16 » The Walt Disney Company is founded.
Day of death September 20, 1984
The temperature on September 20, 1984 was between 11.8 °C and 15.6 °C and averaged 13.3 °C. There was 9.4 mm of rain during 5.2 hours. There was 1.4 hours of sunshine (11%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. 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.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I5962.php : accessed January 30, 2026), "Margaret Maria Anna Dreyer b5c1d6e10f1g1h2 (1903-1984)".
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