The temperature on September 15, 1911 was between 5.8 °C and 17.7 °C and averaged 11.3 °C. There was 1.9 mm of rain. There was 5.1 hours of sunshine (40%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
January 21 » The first Monte Carlo Rally takes place.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
When copying data from this family tree, please include a reference to the origin: Wim Jansen, "Family tree Jansen, Brandsma, Esmeijer, De Waal en Wennekes", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-jansen-brandsma/I23819.php : accessed June 22, 2024), "Willem Johannes Valkenburg (1911-)".
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