Gelders Archief te Arnhem, BS Geboorte Burgerlijke stand Gelderland, dubbelen, Apeldoorn, archief 207, inventarisnummer 11006, 18-01-1909, Apeldoorn, aktenummer 48
Noord-Hollands Archief te Haarlem, BS Huwelijk burgerlijke stand van de gemeente Den Helder, Archiefdeel van (dubbele) registers van de, Den Helder, archief 358.33, inventarisnummer 21935, 11-10-1935, Huwelijksakten van de gemeente Den Helder, 1935, aktenummer 271
The temperature on January 16, 1909 was between 0.8 °C and 5.2 °C and averaged 3.2 °C. There was 0.8 mm of rain. There was 0.4 hours of sunshine (5%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west-southwest. Source: KNMI
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
March 4 » U.S. President William Taft used what became known as a Saxbe fix, a mechanism to avoid the restriction of the U.S. Constitution's Ineligibility Clause, to appoint Philander C. Knox as U.S. Secretary of State.
August 28 » A group of mid-level Greek Army officers launches the Goudi coup, seeking wide-ranging reforms.
September 7 » Eugène Lefebvre crashes a new French-built Wright biplane during a test flight at Juvisy, south of Paris, becoming the first aviator in the world to lose his life in a powered heavier-than-air craft.
September 23 » The novel Le Fantôme de l'Opéra (The Phantom of the Opera), by Gaston Leroux, is published as a serialization in Le Gaulois.
September 30 » The Cunard Line's RMS Mauretania makes a record-breaking westbound crossing of the Atlantic, that will not be bettered for 20 years.
Day of marriage October 11, 1935
The temperature on October 11, 1935 was between 8.4 °C and 13.8 °C and averaged 10.4 °C. There was 2.0 mm of rain during 1.3 hours. There was 2.5 hours of sunshine (23%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 11 » Amelia Earhart becomes the first person to fly solo from Hawaii to California.
February 2 » Leonarde Keeler administers polygraph tests to two murder suspects, the first time polygraph evidence was admitted in U.S. courts.
February 12 » USSMacon, one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks.
May 29 » First flight of the Messerschmitt Bf 109 fighter aeroplane.
July 28 » First flight of the Boeing B-17 Flying Fortress.
December 9 » Student protests in Beiping (now Beijing)'s Tiananmen Square, dispersed by government.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I1044.php : accessed January 23, 2026), "Sander Jonker (1909-)".
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