June 1 » The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
July 1 » Canada and Bermuda are linked by telegraph cable.
September 12 » Salisbury, Rhodesia, is founded.
September 25 » The United States Congress establishes Sequoia National Park.
October 11 » In Washington, D.C., the Daughters of the American Revolution is founded.
November 4 » City and South London Railway: London's first deep-level tube railway opens between King William Street and Stockwell.
Day of death April 20, 1960
The temperature on April 20, 1960 was between 7.1 °C and 21.5 °C and averaged 12.8 °C. There was 9.7 hours of sunshine (68%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
May 1 » Cold War: U-2 incident: Francis Gary Powers, in a Lockheed U-2 spyplane, is shot down over the Sverdlovsk Oblast, Soviet Union, sparking a diplomatic crisis.
May 6 » More than 20million viewers watch the first televised royal wedding when Princess Margaret marries Anthony Armstrong-Jones at Westminster Abbey.
June 23 » The United States Food and Drug Administration declares Enovid to be the first officially approved combined oral contraceptive pill in the world.
August 3 » Niger gains independence from France.
August 5 » Burkina Faso, then known as Upper Volta, becomes independent from France.
September 5 » Muhammad Ali (then known as Cassius Clay) wins the gold medal in the light heavyweight boxing competition at the Olympic Games in Rome.
When copying data from this family tree, please include a reference to the origin: E. Lemoine, "Stamboom Lemoine/Post/Breg/Kensen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-post/I1307.php : accessed December 31, 2025), "Adriaantje Gerrits Post (1890-1960)".
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