The temperature on April 11, 1911 was between 0.6 °C and 11.7 °C and averaged 6.0 °C. There was 0.1 mm of rain. There was 9.1 hours of sunshine (67%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
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.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
October 5 » The Kowloon–Canton Railway commences service.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I9271.php : accessed February 5, 2026), "Akke Wietsma (1911-)".
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