May 11 » An attack upon a U.S. Army paymaster and escort results in the theft of over $28,000 and the award of two Medals of Honor.
June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.
July 8 » The first issue of The Wall Street Journal is published.
July 11 » Tijuana, Mexico, is founded.
November 11 » The State of Washington is admitted as the 42nd state of the United States.
Day of marriage May 18, 1921
The temperature on May 18, 1921 was between 10.5 °C and 18.2 °C and averaged 13.2 °C. There was 0.2 mm of rain. There was 5.0 hours of sunshine (32%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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 27 » The International Working Union of Socialist Parties is founded in Vienna.
May 3 » West Virginia becomes the first state to legislate a broad sales tax, but does not implement it until a number of years later due to enforcement issues.
May 31 » The Tulsa race massacre kills at least 39, but other estimates of black fatalities vary from 55 to about 300.
June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
July 29 » Adolf Hitler becomes leader of the National Socialist German Workers Party.
November 4 » The Saalschutz Abteilung (hall defense detachment) of the Nazi Party is renamed the Sturmabteilung (storm detachment) after a large riot in Munich.
When copying data from this family tree, please include a reference to the origin: Hans Pruckmuller, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/van-willigen-stamboom/I10636.php : accessed February 15, 2026), "Geertruida Jacoba Klinkhamer (1889-????)".
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