The temperature on December 11, 1911 was between 2.3 °C and 8.1 °C and averaged 6.0 °C. There was 3.0 mm of rain. There was 2.6 hours of sunshine (33%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
January 3 » A gun battle in the East End of London left two dead and sparked a political row over the involvement of then-Home Secretary Winston Churchill.
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
March 25 » In New York City, the Triangle Shirtwaist Factory fire kills 146 garment workers.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
August 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
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The Family tree Doppenberg publication was prepared by Henk Doppenberg (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Henk Doppenberg, "Family tree Doppenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-doppenberg/I5453.php : accessed January 19, 2026), "Jan Albertus Doppenberg (1911-)".
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