The temperature on February 11, 1911 was between -4.2 and 2.6 °C. There was 0.3 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 15 » In Standard Oil Co. of New Jersey v. United States, the United States Supreme Court declares Standard Oil to be an "unreasonable" monopoly under the Sherman Antitrust Act and orders the company to be broken up.
July 1 » Germany despatches the gunship SMSPanther to Morocco, sparking the Agadir Crisis.
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.
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: H.Poelman, "Family tree Poelman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-poelman/I1956.php : accessed June 11, 2024), "Johannes van der Sluis".
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