April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
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.
May 27 » The F4-strength St. Louis–East St. Louis tornado hits in St. Louis, Missouri, and East St. Louis, Illinois, killing at least 255 people and causing over $10-million in damage.
June 2 » Guglielmo Marconi applies for a patent for his wireless telegraph.
June 15 » The deadliest tsunami in Japan's history kills more than 22,000 people.
Day of death April 13, 1964
The temperature on April 13, 1964 was between 6.2 °C and 11.6 °C and averaged 8.9 °C. There was 1.4 mm of rain during 1.1 hours. There was 0.6 hours of sunshine (4%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
April 21 » A Transit-5bn satellite fails to reach orbit after launch; as it re-enters the atmosphere, 2.1 pounds (0.95kg) of radioactive plutonium in its SNAP RTG power source is widely dispersed.
July 27 » Vietnam War: Five thousand more American military advisers are sent to South Vietnam bringing the total number of United States forces in Vietnam to 21,000.
September 13 » Martin Luther King Jr. addresses a crowd of 20,000 West Berliners on Sunday, in Waldbühne.
October 22 » Jean-Paul Sartre is awarded the Nobel Prize in Literature, but turns down the honor.
December 1 » Vietnam War: U.S. President Lyndon B. Johnson and his top-ranking advisers meet to discuss plans to bomb North Vietnam.
When copying data from this family tree, please include a reference to the origin: Bertus Bak, "Family tree Bak", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-bak/I989.php : accessed February 26, 2026), "grietje "grietje" olij (1896-1964)".
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