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 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
Day of marriage July 26, 1921
The temperature on July 26, 1921 was between 12.7 °C and 25.4 °C and averaged 19.6 °C. There was 12.7 hours of sunshine (80%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 12 » Bolsheviks launch a revolt in Georgia as a preliminary to the Red Army invasion of Georgia.
February 27 » The International Working Union of Socialist Parties is founded in Vienna.
March 17 » The Second Polish Republic adopts the March Constitution.
March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
July 29 » Adolf Hitler becomes leader of the National Socialist German Workers Party.
September 8 » Margaret Gorman, a 16-year-old, wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dubbed her the first Miss America.
Day of death July 1, 1937
The temperature on July 1, 1937 was between 11.9 °C and 19.7 °C and averaged 16.3 °C. There was 9.8 mm of rain during 5.3 hours. There was 0.6 hours of sunshine (4%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 20 » Franklin D. Roosevelt and John Nance Garner are sworn in for their second terms as U.S. President and U.S. Vice President; it is the first time a Presidential Inauguration takes place on January 20 since the 20th Amendment changed the dates of presidential terms.
February 11 » The Flint sit-down strike ends when General Motors recognizes the United Auto Workers trade union.
May 28 » Volkswagen, the German automobile manufacturer is founded.
July 9 » The silent film archives of Fox Film Corporation are destroyed by the 1937 Fox vault fire.
November 8 » The Nazi exhibition Der ewige Jude ("The Eternal Jew") opens in Munich.
December 12 » Second Sino-Japanese War: USS Panay incident: Japanese aircraft bomb and sink U.S. gunboat USSPanay on the Yangtze river in China.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I97089.php : accessed September 28, 2026), "Aart Middeldorp (1896-1937)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.