April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of death April 24, 1971
The temperature on April 24, 1971 was between 6.6 °C and 12.9 °C and averaged 9.9 °C. There was 6.0 mm of rain during 10.1 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
May 20 » In the Chuknagar massacre, Pakistani forces massacre thousands, mostly Bengali Hindus.
July 15 » The United Red Army is founded in Japan.
August 5 » The first Pacific Islands Forum (then known as the "South Pacific Forum") is held in Wellington, New Zealand, with the aim of enhancing cooperation between the independent countries of the Pacific Ocean.
September 21 » Bahrain, Bhutan and Qatar join the United Nations.
September 28 » The Parliament of the UK passes the Misuse of Drugs Act 1971, banning the medicinal use of cannabis.
December 8 » Indo-Pakistani War: The Indian Navy launches an attack on West Pakistan's port city of Karachi.
When copying data from this family tree, please include a reference to the origin: W.J. Oving, "Family tree Oving", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oving/I79107.php : accessed March 12, 2026), "Hendrikus Antonius KOOLENBRANDER (1897-1971)".
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