January 10 » The first great Texas oil gusher is discovered at Spindletop in Beaumont, Texas.
July 24 » O. Henry is released from prison in Columbus, Ohio, after serving three years for embezzlement from a bank.
September 2 » Vice President of the United States Theodore Roosevelt utters the famous phrase, "Speak softly and carry a big stick" at the Minnesota State Fair.
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 24 » Annie Edson Taylor becomes the first person to go over Niagara Falls in a barrel.
December 10 » The first Nobel Prize ceremony is held in Stockholm on the fifth anniversary of Alfred Nobel's death.
Day of marriage June 20, 1930
The temperature on June 20, 1930 was between 12.5 °C and 21.7 °C and averaged 17.3 °C. There was 2.5 hours of sunshine (15%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 18 » While studying photographs taken in January, Clyde Tombaugh discovers Pluto.
March 6 » International Unemployment Day demonstrations globally initiated by the Comintern.
May 27 » The 1,046 feet (319m) Chrysler Building in New York City, the tallest man-made structure at the time, opens to the public.
June 9 » A Chicago Tribune reporter, Jake Lingle, is killed during rush hour at the Illinois Central train station by Leo Vincent Brothers, allegedly over a $100,000 gambling debt owed to Al Capone.
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
October 5 » British airship R101 crashes in France en route to India on its maiden voyage.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I16611.php : accessed February 23, 2026), "Johanna Cornelia Slager (1901-)".
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