The temperature on August 14, 1967 was between 10.6 °C and 17.0 °C and averaged 14.2 °C. There was 8.4 mm of rain during 4.8 hours. There was 1.0 hours of sunshine (7%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 14 » Counterculture of the 1960s: The Human Be-In takes place in San Francisco, California's Golden Gate Park, launching the Summer of Love.
January 14 » The New York Times reports that the U.S. Army is conducting secret germ warfare experiments.
February 13 » American researchers discover the Madrid Codices by Leonardo da Vinci in the National Library of Spain.
March 6 » Cold War: Joseph Stalin's daughter Svetlana Alliluyeva defects to the United States.
April 4 » Martin Luther King Jr. delivers his "Beyond Vietnam: A Time to Break Silence" speech in New York City's Riverside Church.
November 21 » Vietnam War: American General William Westmoreland tells news reporters: "I am absolutely certain that whereas in 1965 the enemy was winning, today he is certainly losing."
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I58055.php : accessed March 6, 2026), "Gerrit Visser (-1967)".
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