The temperature on May 24, 1904 was between 4.7 °C and 17.7 °C and averaged 12.9 °C. There was -0.1 hours of sunshine (0%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
February 17 » Madama Butterfly receives its première at La Scala in Milan.
April 30 » The Louisiana Purchase Exposition World's Fair opens in St. Louis, Missouri.
May 9 » The steam locomotive City of Truro becomes the first steam engine in Europe to exceed 100mph (160km/h).
June 15 » A fire aboard the steamboat SSGeneral Slocum in New York City's East River kills 1,000.
November 16 » English engineer John Ambrose Fleming receives a patent for the thermionic valve (vacuum tube).
December 6 » Theodore Roosevelt articulated his "Corollary" to the Monroe Doctrine, stating that the U.S. would intervene in the Western Hemisphere should Latin American governments prove incapable or unstable.
Day of marriage June 18, 1921
The temperature on June 18, 1921 was between 6.9 °C and 15.8 °C and averaged 12.3 °C. There was 5.2 hours of sunshine (31%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. 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 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
May 3 » West Virginia becomes the first state to legislate a broad sales tax, but does not implement it until a number of years later due to enforcement issues.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.
July 11 » The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I4712.php : accessed October 2, 2026), "Johanna Boomsma (1904-)".
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