May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
July 29 » In Italy, King Umberto I of Italy is assassinated by the anarchist Gaetano Bresci.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
October 19 » Max Planck discovers Planck's law of black-body radiation.
November 7 » Second Boer War: Battle of Leliefontein, a battle during which the Royal Canadian Dragoons win three Victoria Crosses.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage May 12, 1926
The temperature on May 12, 1926 was between 8.1 °C and 15.1 °C and averaged 11.4 °C. There was 4.9 mm of rain. There was 4.1 hours of sunshine (26%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 8 » Abdul-Aziz ibn Saud is crowned King of Hejaz.
April 21 » Al-Baqi cemetery, former site of the mausoleum of four Shi'a Imams, is leveled to the ground by Wahhabis.
May 9 » Admiral Richard E. Byrd and Floyd Bennett claim to have flown over the North Pole (later discovery of Byrd's diary appears to cast some doubt on the claim.)
June 23 » The College Board administers the first SAT exam.
June 28 » Mercedes-Benz is formed by Gottlieb Daimler and Karl Benz merging their two companies.
July 23 » Fox Film buys the patents of the Movietone sound system for recording sound onto film.
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/I125884.php : accessed December 30, 2025), "Taekje Veenstra (1900-)".
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