April 14 » The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
June 1 » The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
July 3 » Idaho is admitted as the 43rd U.S. state.
July 10 » Wyoming is admitted as the 44th U.S. state.
October 1 » Yosemite National Park is established by the U.S. Congress.
December 29 » Wounded Knee Massacre on Pine Ridge Indian Reservation, 300 Lakota are killed by the United States 7th Cavalry Regiment.
Day of death August 20, 1987
The temperature on August 20, 1987 was between 13.6 °C and 23.8 °C and averaged 18.3 °C. There was 7.5 hours of sunshine (52%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 23 » Supernova 1987a is seen in the Large Magellanic Cloud.
February 26 » Iran–Contra affair: The Tower Commission rebukes President Ronald Reagan for not controlling his national security staff.
April 8 » Los Angeles Dodgers executive Al Campanis resigns amid controversy over racially charged remarks he had made while on Nightline.
June 12 » Cold War: At the Brandenburg Gate, U.S. President Ronald Reagan publicly challenges Mikhail Gorbachev to tear down the Berlin Wall.
November 28 » South African Airways Flight 295 crashes into the Indian Ocean, killing all 159 people on board.
December 8 » An Israeli army tank transporter kills four Palestinian refugees and injures seven others during a traffic accident at the Erez Crossing on the Israel–Gaza Strip border, which has been cited as one of the events which sparked the First Intifada.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P846.php : accessed January 2, 2026), "Helen Jackson (1890-1987)".
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