April 29 » A landslide kills 70 people in Frank, in the District of Alberta, Canada.
May 29 » In the May Coup, Alexander I, King of Serbia, and Queen Draga, are assassinated in Belgrade by the Black Hand (Crna Ruka) organization.
June 19 » Benito Mussolini, at the time a radical Socialist, is arrested by Bern police for advocating a violent general strike.
October 10 » The Women's Social and Political Union is founded in support of the enfranchisement of British women.
December 17 » The Wright brothers make the first controlled powered, heavier-than-air flight in the Wright Flyer at Kitty Hawk, North Carolina.
December 30 » A fire at the Iroquois Theater in Chicago, Illinois kills at least 605.
Day of death April 1, 1960
The temperature on April 1, 1960 was between 4.4 °C and 8.1 °C and averaged 6.0 °C. There was 0.1 mm of rain during 0.1 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
April 21 » Brasília, Brazil's capital, is officially inaugurated. At 09:30, the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro.
May 3 » The Off-Broadway musical comedy The Fantasticks opens in New York City's Greenwich Village, eventually becoming the longest-running musical of all time.
May 11 » Adolf Eichmann is captured by the Mossad in Argentina.
June 26 » The former British Protectorate of British Somaliland gains its independence as Somaliland.
December 13 » While Emperor Haile Selassie of Ethiopia visits Brazil, his Imperial Bodyguard seizes the capital and proclaims him deposed and his son, Crown Prince Asfa Wossen, Emperor.
December 14 » Convention against Discrimination in Education of UNESCO is adopted.
When copying data from this family tree, please include a reference to the origin: A. Koolmees, "Family tree Koolmees", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koolmees/I384.php : accessed February 26, 2026), "Hendrikus van de Kuil (1903-1960)".
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