January 31 » Czechoslav Trade Union Association is founded in Prague.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
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.
Day of death April 30, 1981
The temperature on April 30, 1981 was between 7.6 °C and 10.3 °C and averaged 9.5 °C. There was 7.5 mm of rain during 16.4 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 1 » Greece is admitted into the European Community.
March 5 » The ZX81, a pioneering British home computer, is launched by Sinclair Research and would go on to sell over 1⁄2 million units around the world.
March 30 » U.S. President Ronald Reagan is shot in the chest outside a Washington, D.C., hotel by John Hinckley, Jr.; three others are wounded in the same incident.
April 3 » The Osborne 1, the first successful portable computer, is unveiled at the West Coast Computer Faire in San Francisco.
June 5 » The "Morbidity and Mortality Weekly Report" of the Centers for Disease Control and Prevention reports that five people in Los Angeles, California, have a rare form of pneumonia seen only in patients with weakened immune systems, in what turns out to be the first recognized cases of AIDS.
September 21 » Belize is granted full independence from the United Kingdom.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I12649.php : accessed January 31, 2026), "Cornelia Helena Linde Theunissen (1897-1981)".
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