May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
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.
August 16 » Skookum Jim Mason, George Carmack and Dawson Charlie discover gold in a tributary of the Klondike River in Canada, setting off the Klondike Gold Rush.
August 17 » Bridget Driscoll became the first recorded case of a pedestrian killed in a collision with a motor car in the United Kingdom.
August 27 » Anglo-Zanzibar War: The shortest war in world history (09:02 to 09:40), between the United Kingdom and Zanzibar.
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 death December 21, 1968
The temperature on December 21, 1968 was between -1.1 °C and 8.4 °C and averaged 5.2 °C. There was 1.3 mm of rain during 2.1 hours. There was 0.2 hours of sunshine (3%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 1 » Vietnam War: The execution of Viet Cong officer Nguyễn Văn Lém by South Vietnamese National Police Chief Nguyễn Ngọc Loan is recorded on motion picture film, as well as in an iconic still photograph taken by Eddie Adams.
March 17 » As a result of nerve gas testing by the U.S. Army Chemical Corps in Skull Valley, Utah, over 6,000 sheep are found dead.
July 26 » Vietnam War: South Vietnamese opposition leader Trương Đình Dzu is sentenced to five years hard labor for advocating the formation of a coalition government as a way to move toward an end to the war.
August 20 » Cold War: Warsaw Pact troops invade Czechoslovakia, crushing the Prague Spring. East German participation is limited to a few specialists due to memories of the recent war. Only Albania and Romania refuse to participate.
October 26 » Soviet cosmonaut Georgy Beregovoy pilots Soyuz 3 into space for a four-day mission.
November 26 » Vietnam War: United States Air Force helicopter pilot James P. Fleming rescues an Army Special Forces unit pinned down by Viet Cong fire. He is later awarded the Medal of Honor.
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/I121095.php : accessed October 22, 2026), "Douwe Pieter Zijlstra (1896-1968)".
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