April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 20 » Cuba gains independence from the United States. Tomás Estrada Palma becomes the country's first President.
June 24 » King Edward VII of the United Kingdom develops appendicitis, delaying his coronation.
August 22 » Cadillac Motor Company is founded.
December 14 » The Commercial Pacific Cable Company lays the first Pacific telegraph cable, from San Francisco to Honolulu.
Day of death May 21, 1957
The temperature on May 21, 1957 was between 9.7 °C and 14.4 °C and averaged 11.3 °C. There was 1.5 mm of rain during 1.5 hours. There was 3.3 hours of sunshine (21%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
January 22 » Israel withdraws from the Sinai Peninsula.
January 31 » Eight people (5 total crew from 2 aircraft and 3 on the ground) in Pacoima, California are killed following the mid-air collision between a Douglas DC-7 airliner and a Northrop F-89 Scorpion fighter jet.
April 30 » Supplementary Convention on the Abolition of Slavery entered into force.
May 15 » At Malden Island in the Pacific Ocean, Britain tests its first hydrogen bomb in Operation Grapple.
August 21 » The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.
December 2 » United Nations Security Council Resolution 126 relating to Kashmir conflict is adopted.
When copying data from this family tree, please include a reference to the origin: Brian Kennedy, "Kennedy Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kennedy-family-tree/P19237.php : accessed May 5, 2025), "Frederick Gordon Brown (1902-1957)".
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