The temperature on July 4, 1911 was between 3.0 °C and 20.0 °C and averaged 13.3 °C. There was 14.5 hours of sunshine (87%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
May 15 » More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
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.
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 29 » Italy declares war on the Ottoman Empire.
November 19 » The Doom Bar in Cornwall claimed two ships, Island Maid and Angele, the latter killing the entire crew except the captain.
When copying data from this family tree, please include a reference to the origin: Coos van Spijk, "Family tree of Spijk and her many ancestors", database, Genealogy Online (https://www.genealogieonline.nl/van-spijk-stamboom/I89991.php : accessed January 27, 2026), "Willem van Duijn (1911-)".
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