The temperature on May 19, 1911 was between 8.5 °C and 11.9 °C and averaged 10.0 °C. There was 0.8 mm of rain. 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 14 » Roald Amundsen's South Pole expedition makes landfall on the eastern edge of the Ross Ice Shelf.
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
When copying data from this family tree, please include a reference to the origin: Rob Dumas, "Family tree Dumas - Java - Nederlands-Indië", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dumas/I517150.php : accessed August 8, 2025), "Maria Jacoba Hendrika van Baalen (± 1827-1911)".
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