April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
November 29 » The Pittsburgh Stars defeated the Philadelphia Athletics, 11–0 to win the first championship associated with an American national professional football league.
Day of death November 18, 1968
The temperature on November 18, 1968 was between 2.6 °C and 4.9 °C and averaged 3.8 °C. There was 0.7 mm of rain during 3.5 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 22 » Operation Igloo White, a US electronic surveillance system to stop communist infiltration into South Vietnam begins installation.
March 12 » Mauritius achieves independence from the United Kingdom.
May 25 » The Gateway Arch in St. Louis, Missouri, is dedicated.
October 14 » The 6.5 Mw Meckering earthquake shook the southwest portion of Western Australia with a maximum Mercalli intensity of IX (Violent), causing $2.2 million in damage and leaving 20–28 people injured.
October 16 » Tommie Smith and John Carlos are ejected from the US Olympic team for participating in the Olympics Black Power salute.
October 20 » Former First Lady Jacqueline Kennedy marries Greek shipping tycoon Aristotle Onassis.
When copying data from this family tree, please include a reference to the origin: Rob Kalfsvel, "Family tree R. Kalfsvel", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kalfsvel/I1500.php : accessed May 14, 2024), "Roosje Groenteman (1902-1968)".
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