March 4 » The longest bridge in Great Britain, the Forth Bridge in Scotland, measuring 1,710 feet (520m) long, is opened by the Duke of Rothesay, later King Edward VII.
July 1 » Canada and Bermuda are linked by telegraph cable.
July 10 » Wyoming is admitted as the 44th U.S. state.
October 11 » In Washington, D.C., the Daughters of the American Revolution is founded.
November 23 » King William III of the Netherlands dies without a male heir and a special law is passed to allow his daughter Princess Wilhelmina to succeed him.
December 15 » Hunkpapa Lakota leader Sitting Bull is killed on Standing Rock Indian Reservation, leading to the Wounded Knee Massacre.
Day of marriage December 11, 1920
The temperature on December 11, 1920 was between -5.1 °C and -1.7 °C and averaged -3.0 °C. There was -0.1 hours of sunshine (0%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-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.
January 19 » The American Civil Liberties Union (ACLU) is founded.
April 25 » At the San Remo conference, the principal Allied Powers of World War I adopt a resolution to determine the allocation of Class "A" League of Nations mandates for administration of the former Ottoman-ruled lands of the Middle East.
July 11 » In the East Prussian plebiscite the local populace decides to remain with Weimar Germany.
July 12 » The Soviet–Lithuanian Peace Treaty is signed, by which Soviet Russia recognizes the independence of Lithuania.
August 20 » The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
November 16 » Qantas, Australia's national airline, is founded as Queensland and Northern Territory Aerial Services Limited.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I473819.php : accessed February 5, 2026), "Hendrik Blaak (1890-????)".
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