June 17 » The College Board introduces its first standardized test, the forerunner to the SAT.
August 5 » Peter O'Connor sets the first IAAF recognised long jump world record of 24ft 11.75in (7.6137m), a record that would stand for 20 years.
August 10 » The U.S. Steel recognition strike by the Amalgamated Association of Iron and Steel Workers begins.
September 6 » Leon Czolgosz, an unemployed anarchist, shoots and fatally wounds US President William McKinley at the Pan-American Exposition in Buffalo, New York.
October 29 » Leon Czolgosz, the assassin of U.S. President William McKinley, is executed by electrocution.
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.
February 14 » The Computing-Tabulating-Recording Company changes its name to International Business Machines Corporation (IBM).
March 3 » The 407-year-old Islamic caliphate is abolished, when Caliph Abdülmecid II of the Ottoman Caliphate is deposed. The last remnant of the old regime gives way to the reformed Turkey of Kemal Atatürk.
March 3 » The Free State of Fiume is annexed by the Kingdom of Italy.
March 25 » On the anniversary of Greek Independence, Alexandros Papanastasiou proclaims the Second Hellenic Republic.
May 10 » J. Edgar Hoover is appointed first Director of the United States' Federal Bureau of Investigation (FBI), and remains so until his death in 1972.
May 21 » University of Chicago students Richard Loeb and Nathan Leopold, Jr. murder 14-year-old Bobby Franks in a "thrill killing".
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 19 » Transfer of Crimea: The Soviet Politburo of the Soviet Union orders the transfer of the Crimean Oblast from the Russian SFSR to the Ukrainian SSR.
February 28 » The first color television sets using the NTSC standard are offered for sale to the general public.
March 1 » Armed Puerto Rican nationalists attack the United States Capitol building, injuring five Representatives.
March 19 » Willie Mosconi sets a world record by running 526 consecutive balls without a miss during a straight pool exhibition at East High Billiard Club in Springfield, Ohio, setting a record that remains unbroken.
September 26 » The Japanese rail ferry Tōya Maru sinks during a typhoon in the Tsugaru Strait, Japan, killing 1,172.
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 28, 2026), "Roelof Petrus Gerhardus Dreyer (1901-1954)".
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