The temperature on July 11, 1911 was between 9.8 °C and 22.5 °C and averaged 16.6 °C. There was 15.0 hours of sunshine (91%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
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 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
When copying data from this family tree, please include a reference to the origin: Keith Mann Spencer, "Mann Spencer Tree", database, Genealogy Online (https://www.genealogieonline.nl/mann-spencer-tree/P133.php : accessed January 18, 2026), "Hazel Cook (± 1897-????)".
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