April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage August 9, 1923
The temperature on August 9, 1923 was between 10.5 °C and 31.0 °C and averaged 21.0 °C. There was 12.6 hours of sunshine (84%). 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 3 » TIME magazine is published for the first time.
April 28 » Wembley Stadium is opened, named initially as the Empire Stadium.
August 23 » Captain Lowell Smith and Lieutenant John P. Richter performed the first mid-air refueling on De Havilland DH-4B, setting an endurance flight record of 37 hours.
September 4 » Maiden flight of the first U.S. airship, the USSShenandoah.
October 13 » Ankara becomes the capital of Turkey.
December 21 » United Kingdom and Nepal formally signed an agreement of friendship, called the Nepal–Britain Treaty of 1923, which superseded the Treaty of Sugauli signed in 1816.
Day of death November 19, 1943
The temperature on November 19, 1943 was between -1.8 °C and 2.4 °C and averaged 0.6 °C. There was 0.2 mm of rain. There was 0.8 hours of sunshine (9%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 24 » World War II: Franklin D. Roosevelt and Winston Churchill conclude a conference in Casablanca.
February 7 » World War II: Imperial Japanese Navy forces complete the evacuation of Imperial Japanese Army troops from Guadalcanal during Operation Ke, ending Japanese attempts to retake the island from Allied forces in the Guadalcanal Campaign.
March 6 » World War II: The Battle of Fardykambos, one of the first major battles between the Greek Resistance and the occupying Royal Italian Army, ends with the surrender of an entire Italian battalion, the bulk of the garrison of the town of Grevena, leading to its liberation a fortnight later.
July 22 » World War II: Allied forces capture Palermo during the Allied invasion of Sicily.
September 6 » The Monterrey Institute of Technology is founded in Monterrey, Mexico as one of the largest and most influential private universities in Latin America.
November 25 » World War II: Statehood of Bosnia and Herzegovina is re-established at the State Anti-fascist Council for the National Liberation of Bosnia and Herzegovina.
When copying data from this family tree, please include a reference to the origin: W.A. van der Waal-VISSER, "Family tree Van der Waal", database, Genealogy Online (https://www.genealogieonline.nl/van-der-waal-stamboom/I40979.php : accessed August 10, 2025), "helena COHEN (1897-1943)".
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