January 31 » Czechoslav Trade Union Association is founded in Prague.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
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 30 » The British Colony of Natal annexes Zululand.
Day of death April 11, 1990
The temperature on April 11, 1990 was between 6.5 °C and 12.3 °C and averaged 9.0 °C. There was -0.1 mm of rain. There was 9.8 hours of sunshine (72%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
March 11 » Patricio Aylwin is sworn in as the first democratically elected President of Chile since 1970.
April 12 » Jim Gary's "Twentieth Century Dinosaurs" exhibition opens at the Smithsonian Institution National Museum of Natural History in Washington, D.C. He is the only sculptor ever invited to present a solo exhibition there.
April 24 » Gruinard Island, Scotland, is officially declared free of the anthrax disease after 48 years of quarantine.
April 24 » STS-31: The Hubble Space Telescope is launched from the Space Shuttle Discovery.
July 6 » The Electronic Frontier Foundation is founded.
September 29 » Construction of the Cathedral Church of Saint Peter and Saint Paul (better known as Washington National Cathedral) is completed in Washington, D.C.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P10668.php : accessed February 25, 2026), "Margaret Cameron Carnegie (1897-1990)".
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