The temperature on September 3, 1911 was between 10.0 °C and 24.6 °C and averaged 17.8 °C. There was 9.5 hours of sunshine (70%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
December 9 » A mine explosion near Briceville, Tennessee, kills 84 miners despite rescue efforts led by the United States Bureau of Mines.
December 24 » Lackawanna Cut-Off railway line opens in New Jersey and Pennsylvania.
December 29 » Sun Yat-sen becomes the provisional President of the Republic of China; he formally takes office on January 1, 1912.
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/I119084.php : accessed October 17, 2026), "Gerben Boonstra (1911-)".
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