January 4 » Utah is admitted as the 45th U.S. state.
January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
March 1 » Henri Becquerel discovers radioactive decay.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
June 2 » Guglielmo Marconi applies for a patent for his wireless telegraph.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
Day of marriage June 20, 1916
The temperature on June 20, 1916 was between 5.9 °C and 16.2 °C and averaged 11.2 °C. There was 8.7 hours of sunshine (52%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 27 » World War I: The British government passed a legislation that introduced conscription in the United Kingdom.
March 9 » Mexican Revolution: Pancho Villa leads nearly 500 Mexican raiders in an attack against the border town of Columbus, New Mexico.
April 9 » World War I: The Battle of Verdun: German forces launch their third offensive of the battle.
August 2 » World War I: Austrian sabotage causes the sinking of the Italian battleship Leonardo da Vinci in Taranto.
August 28 » World War I: Italy declares war on Germany.
September 15 » World War I: Tanks are used for the first time in battle, at the Battle of the Somme.
Day of death January 21, 1969
The temperature on January 21, 1969 was between 4.1 °C and 7.9 °C and averaged 6.1 °C. There was 0.7 mm of rain during 2.9 hours. There was 1.7 hours of sunshine (20%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
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/I21462.php : accessed February 14, 2026), "Magtel Gertruida Anna Maria Dreyer (1896-1969)".
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