January 10 » The first great Texas oil gusher is discovered at Spindletop in Beaumont, Texas.
March 1 » The Australian Army is formed.
July 24 » O. Henry is released from prison in Columbus, Ohio, after serving three years for embezzlement from a bank.
August 6 » Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation.
September 7 » The Boxer Rebellion in Qing dynasty (modern-day China) officially ends with the signing of the Boxer Protocol.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
Day of marriage August 12, 1926
The temperature on August 12, 1926 was between 9.4 °C and 18.4 °C and averaged 14.1 °C. There was 7.8 mm of rain. There was 9.6 hours of sunshine (64%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 8 » Crown Prince Nguyễn Phúc Vĩnh Thuỵ ascends the throne to become the last monarch of Vietnam.
April 24 » The Treaty of Berlin is signed. Germany and the Soviet Union each pledge neutrality in the event of an attack on the other by a third party for the next five years.
May 4 » The United Kingdom general strike begins.
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 28 » Mercedes-Benz is formed by Gottlieb Daimler and Karl Benz merging their two companies.
August 5 » Harry Houdini performs his greatest feat, spending 91 minutes underwater in a sealed tank before escaping.
Day of death February 25, 1963
The temperature on February 25, 1963 was between -10.5 °C and 2.5 °C and averaged -4.8 °C. There was 9.1 hours of sunshine (86%). The almost cloudless was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
May 15 » Project Mercury: The launch of the final Mercury mission, Mercury-Atlas 9 with astronaut Gordon Cooper on board. He becomes the first American to spend more than a day in space, and the last American to go into space alone.
June 5 » Movement of 15 Khordad: Protests against the arrest of Ayatollah Ruhollah Khomeini by the Shah of Iran, Mohammad Reza Pahlavi. In several cities, masses of angry demonstrators are confronted by tanks and paratroopers.
June 16 » Soviet Space Program: Vostok 6 mission: Cosmonaut Valentina Tereshkova becomes the first woman in space.
July 26 » An earthquake in Skopje, Yugoslavia (present-day North Macedonia) leaves 1,100 dead.
September 2 » CBS Evening News becomes U.S. network television's first half-hour weeknight news broadcast, when the show is lengthened from 15 to 30 minutes.
October 9 » In Italy, a large landslide a causes a giant wave to overtop the Vajont Dam, killing over 2,000.
When copying data from this family tree, please include a reference to the origin: Rob Slotemaker, "Family tree Slotemaker", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-slotemaker/I90.php : accessed January 25, 2026), "Johanna "Jans" Slotemaker (1901-1963)".
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