January 10 » The first great Texas oil gusher is discovered at Spindletop in Beaumont, Texas.
March 1 » The Australian Army is formed.
May 9 » Australia opens its first national parliament in Melbourne.
July 4 » William Howard Taft becomes American governor of the Philippines.
August 5 » Peter O'Connor sets the first IAAF recognised long jump world record of 24ft 11.75in (7.6137m), a record that would stand for 20 years.
September 17 » Second Boer War: Boers capture a squadron of the 17th Lancers at the Battle of Elands River.
Day of death June 4, 1960
The temperature on June 4, 1960 was between 12.6 °C and 26.0 °C and averaged 20.3 °C. There was 14.0 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 18 » Capital Airlines Flight 20 crashes into a farm in Charles City County, Virginia, killing all 50 aboard, the third fatal Capital Airlines crash in as many years.
April 4 » France agrees to grant independence to the Mali Federation, a union of Senegal and French Sudan.
April 21 » Brasília, Brazil's capital, is officially inaugurated. At 09:30, the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro.
August 19 » Sputnik program: Korabl-Sputnik 2: The Soviet Union launches the satellite with the dogs Belka and Strelka, 40 mice, two rats and a variety of plants.
November 25 » The Mirabal sisters of the Dominican Republic are assassinated.
December 11 » French forces crack down in a violent clash with protesters in French Algeria during a visit by French President Charles de Gaulle.
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The Family tree Doppenberg publication was prepared by Henk Doppenberg (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Henk Doppenberg, "Family tree Doppenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-doppenberg/I4796.php : accessed February 23, 2026), "Wilhelmina Slijkhuis (1901-1960)".
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