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.
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.
July 11 » The first cultured pearl is obtained by Kōkichi Mikimoto.
September 19 » In New Zealand, the Electoral Act of 1893 is consented to by the governor, giving all women in New Zealand the right to vote.
November 7 » Women's suffrage: Women in the U.S. state of Colorado are granted the right to vote, the second state to do so.
November 28 » Women's suffrage in New Zealand concludes with the 1893 New Zealand general election.
Day of marriage September 23, 1915
The temperature on September 23, 1915 was between 5.8 °C and 21.2 °C and averaged 14.0 °C. There was 7.4 hours of sunshine (61%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
April 22 » The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres.
May 23 » World War I: Italy joins the Allies, fulfilling its part of the Treaty of London.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
August 15 » A story in New York World newspaper reveals that the Imperial German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production.
September 25 » World War I: The Second Battle of Champagne begins.
October 12 » World War I: British nurse Edith Cavell is executed by a German firing squad for helping Allied soldiers escape from Belgium
Day of death December 27, 1950
The temperature on December 27, 1950 was between -2.7 °C and 1.1 °C and averaged -0.7 °C. There was 1.3 mm of rain during 4.6 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
January 5 » In the Sverdlovsk air disaster, all 19 of those on board are killed, including almost the entire national ice hockey team (VVS Moscow) of the Soviet Air Force – 11 players, as well as a team doctor and a masseur.
July 4 » Cold War: Radio Free Europe first broadcasts.
July 5 » Zionism: The Knesset passes the Law of Return which grants all Jews the right to immigrate to Israel.
August 24 » Edith Sampson becomes the first black U.S. delegate to the United Nations.
September 11 » Korean War: President Harry S. Truman approved military operations north of the 38 parallel.
October 11 » CBS's field-sequential color system for television is the first to be licensed for broadcast by the U.S. Federal Communications Commission.
When copying data from this family tree, please include a reference to the origin: Hans Dunning, "Family tree Dunning", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dunning/R2547.php : accessed February 3, 2026), "Derk van Slochteren (1893-1950)".
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