April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
December 6 » London becomes the world's first city to host licensed taxicabs.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
December 30 » The British Colony of Natal annexes Zululand.
Day of death June 4, 1959
The temperature on June 4, 1959 was between 10.8 °C and 26.8 °C and averaged 19.7 °C. There was 13.4 hours of sunshine (81%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 30 » The forces of the Sultanate of Muscat occupy the last strongholds of the Imamate of Oman, Saiq and Shuraijah, marking the end of Jebel Akhdar War in Oman.
February 20 » The Avro Arrow program to design and manufacture supersonic jet fighters in Canada is cancelled by the Diefenbaker government amid much political debate.
July 29 » First United States Congress elections in Hawaii as a state of the Union.
August 14 » Founding and first official meeting of the American Football League.
September 18 » Vanguard 3 is launched into Earth orbit.
October 2 » Rod Serling's anthology series The Twilight Zone premieres on CBS. The first episode is “Where Is Everybody?”
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I98.php : accessed February 24, 2026), "Petrus Hubertus Hoogmartens (1897-1959)".
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