The temperature on March 18, 1915 was between 1.6 °C and 4.5 °C and averaged 3.0 °C. There was 0.7 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. 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.
January 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
January 25 » Alexander Graham Bell inaugurates U.S. transcontinental telephone service, speaking from New York to Thomas Watson in San Francisco.
February 12 » In Washington, D.C., the first stone of the Lincoln Memorial is put into place.
February 22 » World War I: The Imperial German Navy institutes unrestricted submarine warfare.
March 26 » The Vancouver Millionaires win the 1915 Stanley Cup Finals, the first championship played between the Pacific Coast Hockey Association and the National Hockey Association.
April 22 » The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres.
Day of death December 17, 1961
The temperature on December 17, 1961 was between -7.7 °C and -2.5 °C and averaged -5.3 °C. There was 6.2 hours of sunshine (80%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 3 » The SL-1 nuclear reactor is destroyed by a steam explosion in the only reactor incident in the United States to cause immediate fatalities.
April 12 » Cold War: Space Race: The Soviet cosmonaut Yuri Gagarin becomes the first human to travel into outer space and perform the first manned orbital flight, Vostok 1.
April 25 » Robert Noyce is granted a patent for an integrated circuit.
May 14 » Civil rights movement: A white mob twice attacks a Freedom Riders bus near Anniston, Alabama, before fire-bombing the bus and attacking the civil rights protesters who flee the burning vehicle.
August 10 » Vietnam War: The U.S. Army begins Operation Ranch Hand, spraying an estimated 20million US gallons (76,000m) of defoliants and herbicides over rural areas of South Vietnam in an attempt to deprive the Viet Cong of food and vegetation cover.
December 9 » Tanganyika becomes independent from Britain.
When copying data from this family tree, please include a reference to the origin: Arie Verloop, "Family tree Verloop", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-verloop/I2305.php : accessed October 15, 2026), "Jacob (Jaap) VERLOOP (1915-1961)".
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