In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
February 28 » The USSIndiana, the lead ship of her class and the first battleship in the United States Navy comparable to foreign battleships of the time, is launched.
March 1 » Electrical engineer Nikola Tesla gives the first public demonstration of radio in St. Louis, Missouri.
April 1 » The rank of Chief Petty Officer in the United States Navy is established.
June 13 » Grover Cleveland notices a rough spot in his mouth and on July 1 undergoes secret, successful surgery to remove a large, cancerous portion of his jaw; the operation was not revealed to the public until 1917, nine years after the president's death.
July 9 » Daniel Hale Williams, American heart surgeon, performs the first successful open-heart surgery in United States without anesthesia.
August 14 » France becomes the first country to introduce motor vehicle registration.
Day of marriage November 18, 1920
The temperature on November 18, 1920 was between -3.0 °C and 4.2 °C and averaged 0.6 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. 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.
February 14 » The League of Women Voters is founded in Chicago.
March 19 » The United States Senate rejects the Treaty of Versailles for the second time (the first time was on November 19, 1919).
August 15 » Polish–Soviet War: Battle of Warsaw, so-called Miracle at the Vistula.
October 10 » The Carinthian plebiscite determines that the larger part of the Duchy of Carinthia should remain part of Austria.
November 15 » The Free City of Danzig is established.
Day of death December 17, 1961
The temperature on December 17, 1961 was between -7.7 °C and -2.5 °C and averaged -5.3 °C. There was 6.2 hours of sunshine (80%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 31 » Project Mercury: Mercury-Redstone 2: Ham the Chimp travels into outer space.
February 3 » The United States Air Forces begins Operation Looking Glass, and over the next 30 years, a "Doomsday Plane" is always in the air, with the capability of taking direct control of the United States' bombers and missiles in the event of the destruction of the SAC's command post.
April 20 » Cold War: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.
May 30 » The long-time Dominican dictator Rafael Trujillo is assassinated in Santo Domingo, Dominican Republic.
June 16 » While on tour with the Kirov Ballet in Paris, Rudolf Nureyev defects from the Soviet Union.
August 21 » Motown releases what would be its first #1 hit (in America), "Please Mr. Postman" by The Marvelettes.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I47186.php : accessed February 5, 2026), "Anthonij de Groot (1893-1961)".
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