January 1 » Nigeria becomes a British protectorate.
July 24 » O. Henry is released from prison in Columbus, Ohio, after serving three years for embezzlement from a bank.
August 14 » The first claimed powered flight, by Gustave Whitehead in his Number 21.
August 28 » Silliman University is founded in the Philippines. It is the first American private school in the country.
September 7 » The Boxer Rebellion in Qing dynasty (modern-day China) officially ends with the signing of the Boxer Protocol.
November 27 » The U.S. Army War College is established.
Day of marriage December 20, 1924
The temperature on December 20, 1924 was between 5.1 °C and 6.8 °C and averaged 6.0 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 16 » In accordance with the Treaty of Rome, Fiume becomes annexed as part of Italy.
March 25 » On the anniversary of Greek Independence, Alexandros Papanastasiou proclaims the Second Hellenic Republic.
July 24 » Themistoklis Sofoulis becomes Prime Minister of Greece.
October 25 » The Zinoviev letter, which Zinoviev himself denied writing, is published in the Daily Mail; the Labour party would later blame this letter for the Conservatives' landslide election win four days later.
December 19 » German serial killer Fritz Haarmann is sentenced to death for a series of murders.
December 19 » The last Rolls-Royce Silver Ghost is sold in London, England.
Day of death June 30, 1954
The temperature on June 30, 1954 was between 5.0 °C and 17.3 °C and averaged 12.1 °C. There was 9.0 hours of sunshine (54%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
February 23 » The first mass inoculation of children against polio with the Salk vaccine begins in Pittsburgh.
May 7 » Indochina War: The Battle of Dien Bien Phu ends in a French defeat and a Viet Minh victory (the battle began on March 13).
May 17 » The United States Supreme Court hands down a unanimous decision in Brown v. Board of Education of Topeka, Kansas, outlawing racial segregation in public schools.
June 14 » U.S. President Dwight D. Eisenhower signs a bill into law that places the words "under God" into the United States Pledge of Allegiance.
September 29 » The convention establishing CERN (the European Organization for Nuclear Research) is signed.
October 11 » In accord with the 1954 Geneva Conference, French troops complete their withdrawal from North Vietnam.
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/I13422.php : accessed February 4, 2026), "Roelof Petrus Gerhardus Dreyer (1901-1954)".
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