January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
March 6 » Real Madrid CF is founded.
April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
Day of death June 18, 1956
The temperature on June 18, 1956 was between 7.7 °C and 15.2 °C and averaged 12.2 °C. There was 0.7 mm of rain during 1.2 hours. There was 1.7 hours of sunshine (10%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
April 3 » Hudsonville–Standale tornado: The western half of the Lower Peninsula of Michigan is struck by a deadly F5 tornado.
July 13 » The Dartmouth workshop is the first conference on artificial intelligence.
October 28 » Hungarian Revolution: A de facto ceasefire comes into effect between armed revolutionaries and Soviet troops, who begin to withdraw from Budapest. Communist officials and facilities come under attack by revolutionaries.
November 1 » The Indian states Kerala, Andhra Pradesh, and Mysore are formally created under the States Reorganisation Act; Kanyakumari district is joined to Tamil Nadu from Kerala.
November 2 » Hungarian Revolution: Imre Nagy requests UN aid for Hungary. Nikita Khrushchev meets with leaders of other Communist countries to seek their advice on the situation in Hungary, selecting János Kádár as the country's next leader on the advice of Josip Broz Tito.
November 3 » Hungarian Revolution: A new Hungarian government is formed, in which many members of banned non-Communist parties participate. During negotiations on Tököl Island ostensibly on Soviet troop withdrawal, the KGB arrests Pál Maléter and other Hungarian Revolutionary commanders, effectively decapitating the Revolution's military leadership. János Kádár and Ferenc Münnich form a counter-government in Moscow as Soviet troops ready for the final assault.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I56384.php : accessed February 21, 2026), "Henricus van Hees (1902-1956)".
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