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 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
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.
Day of marriage June 19, 1919
The temperature on June 19, 1919 was between 8.2 °C and 23.8 °C and averaged 17.1 °C. There was 10.6 hours of sunshine (63%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. 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 17 » The Ukrainian People's Republic asks Entente and the US for help fighting the Bolsheviks.
June 14 » John Alcock and Arthur Whitten Brown depart from St. John's, Newfoundland on the first nonstop transatlantic flight.
September 10 » Austria and the Allies sign the Treaty of Saint-Germain-en-Laye recognizing the independence of Poland, Hungary, Czechoslovakia and Yugoslavia.
November 11 » The Industrial Workers of the World attack an Armistice Day parade in Centralia, Washington, ultimately resulting in the deaths of five people.
December 17 » Uruguay becomes a signatory to the Buenos Aires copyright treaty.
December 26 » Babe Ruth of the Boston Red Sox is sold to the New York Yankees by owner Harry Frazee, allegedly establishing the Curse of the Bambino superstition.
Day of death November 13, 1950
The temperature on November 13, 1950 was between 5.2 °C and 9.4 °C and averaged 7.5 °C. There was 13.2 mm of rain during 5.3 hours. There was 2.7 hours of sunshine (30%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-southwest. 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).
When copying data from this family tree, please include a reference to the origin: Wicher Dam, "Dambomen, negen verschillende stambomen DAM", database, Genealogy Online (https://www.genealogieonline.nl/dambomen/I8967.php : accessed January 3, 2026), "Leentje Dam (1897-1950)".
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