The temperature on May 6, 1911 was between 3.3 °C and 14.0 °C and averaged 8.7 °C. There was 12.1 hours of sunshine (80%). The average windspeed was 3 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.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 23 » The New York Public Library is dedicated.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
Day of death August 15, 1911
The temperature on August 15, 1911 was between 14.8 °C and 21.0 °C and averaged 16.9 °C. There was 0.8 mm of rain. There was 3.2 hours of sunshine (22%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
January 21 » The first Monte Carlo Rally takes place.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
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 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
When copying data from this family tree, please include a reference to the origin: Chris Merricks, "Merricks Tree", database, Genealogy Online (https://www.genealogieonline.nl/merricks-tree/I242302587096.php : accessed May 2, 2025), "Maria Elisabeth Petronella Wennekes (1911-1911)".
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