January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
March 18 » Macario Sakay issues Presidential Order No. 1 of his Tagalog Republic.
April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Cadillac Motor Company is founded.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
Day of death September 10, 1967
The temperature on September 10, 1967 was between 4.3 °C and 17.7 °C and averaged 11.3 °C. There was 0.1 mm of rain. There was 5.0 hours of sunshine (38%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
January 23 » Diplomatic relations between the Soviet Union and Ivory Coast are established.
May 30 » The Nigerian Eastern Region declares independence as the Republic of Biafra, sparking a civil war.
June 2 » Protests in West Berlin against the arrival of the Shah of Iran turn into riots, during which Benno Ohnesorg is killed by a police officer. His death results in the founding of the terrorist group Movement 2 June.
October 2 » Thurgood Marshall is sworn in as the first African-American justice of the United States Supreme Court.
November 14 » American physicist Theodore Maiman is given a patent for his ruby laser systems, the world's first laser.
November 30 » South Yemen becomes independent from the United Kingdom.
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/I166354.php : accessed October 9, 2026), "Jan Slof (1902-1967)".
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