January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
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.
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.
July 28 » The city of Miami, Florida is incorporated.
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 October 24, 1928
The temperature on October 24, 1928 was between 6.6 °C and 16.2 °C and averaged 11.9 °C. There was 0.3 mm of rain. There was 0.6 hours of sunshine (6%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
June 18 » Aviator Amelia Earhart becomes the first woman to fly in an aircraft across the Atlantic Ocean (she is a passenger; Wilmer Stultz is the pilot and Lou Gordon the mechanic).
July 7 » Sliced bread is sold for the first time (on the inventor's 48th birthday) by the Chillicothe Baking Company of Chillicothe, Missouri.
September 27 » The Republic of China is recognized by the United States.
October 28 » The "Indonesia Raya", now the national anthem, is first played during the Second Indonesian Youth Congress.
December 13 » George Gershwin's An American in Paris is first performed.
Day of death November 1, 1960
The temperature on November 1, 1960 was between 6.9 °C and 15.0 °C and averaged 12.6 °C. There was 16.8 mm of rain during 11.6 hours. There was 0.8 hours of sunshine (8%). The heavily clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
February 13 » Black college students stage the first of the Nashville sit-ins at three lunch counters in Nashville, Tennessee.
April 4 » France agrees to grant independence to the Mali Federation, a union of Senegal and French Sudan.
April 15 » At Shaw University in Raleigh, North Carolina, Ella Baker leads a conference that results in the creation of the Student Nonviolent Coordinating Committee, one of the principal organizations of the civil rights movement in the 1960s.
June 25 » Cold War: Two cryptographers working for the United States National Security Agency left for vacation to Mexico, and from there defected to the Soviet Union.
September 8 » In Huntsville, Alabama, US President Dwight D. Eisenhower formally dedicates the Marshall Space Flight Center (NASA had already activated the facility on July 1).
December 13 » While Emperor Haile Selassie of Ethiopia visits Brazil, his Imperial Bodyguard seizes the capital and proclaims him deposed and his son, Crown Prince Asfa Wossen, Emperor.
When copying data from this family tree, please include a reference to the origin: Michiel van Loon, "Family tree Van Loon", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-loon/I274.php : accessed February 6, 2026), "Hendrik Jan van der Ploeg (1896-1960)".
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