April 20 » Pierre and Marie Curie refine radium chloride.
May 20 » Cuba gains independence from the United States. Tomás Estrada Palma becomes the country's first President.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
Day of death September 12, 1956
The temperature on September 12, 1956 was between 10.6 °C and 15.1 °C and averaged 13.0 °C. There was 0.5 hours of sunshine (4%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
January 28 » Elvis Presley makes his first national television appearance.
March 9 » Soviet forces suppress mass demonstrations in the Georgian SSR, reacting to Nikita Khrushchev's de-Stalinization policy.
June 30 » A TWA Super Constellation and a United Airlines DC-7 collide above the Grand Canyon in Arizona and crash, killing all 128 on board both airliners.
September 9 » Elvis Presley appears on The Ed Sullivan Show for the first time.
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 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: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I136960.php : accessed October 24, 2026), "Martinus van der Kooy (1902-1956)".
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