April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
April 20 » Pierre and Marie Curie refine radium chloride.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
Day of death April 10, 1917
The temperature on April 10, 1917 was between -2.1 °C and 3.9 °C and averaged 0.8 °C. There was 3.7 mm of rain. There was 2.9 hours of sunshine (21%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 11 » World War I: Mesopotamian campaign: Baghdad falls to Anglo-Indian forces commanded by General Stanley Maude.
March 16 » World War I: A German auxiliary cruiser is sunk in the Action of 16 March 1917.
August 6 » World War I: Battle of Mărășești between the Romanian and German armies begins.
October 4 » World War I: The Battle of Broodseinde is fought between the British and German armies in Flanders.
December 6 » Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
December 12 » Father Edward J. Flanagan founds Boys Town as a farm village for wayward boys.
When copying data from this family tree, please include a reference to the origin: David Allen Navorska, "Navorska tree", database, Genealogy Online (https://www.genealogieonline.nl/navorska-tree/I928.php : accessed May 3, 2025), "Johann Sleaper (1902-1917)".
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