January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
April 1 » The University of Northern Colorado was established, as the Colorado State Normal School.
May 2 » Menelik II, Emperor of Ethiopia, signs the Treaty of Wuchale, giving Italy control over Eritrea.
June 3 » The first long-distance electric power transmission line in the United States is completed, running 14 miles (23km) between a generator at Willamette Falls and downtown Portland, Oregon.
July 8 » The first issue of The Wall Street Journal is published.
November 11 » The State of Washington is admitted as the 42nd state of the United States.
Day of death August 6, 1971
The temperature on August 6, 1971 was between 14.5 °C and 23.7 °C and averaged 18.2 °C. There was 0.4 mm of rain during 0.6 hours. There was 5.4 hours of sunshine (35%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
February 20 » The United States Emergency Broadcast System is accidentally activated in an erroneous national alert.
March 18 » Peru: a landslide crashes into Yanawayin Lake, killing 200 people at the mining camp of Chungar.
August 9 » The Troubles: The British Army in Northern Ireland launches Operation Demetrius. Hundreds of people are arrested and interned, thousands are displaced, and twenty are killed in the violence that followed.
August 15 » Bahrain gains independence from the United Kingdom.
October 28 » Prospero becomes the only British satellite to be launched by a British rocket.
November 30 » Iran seizes the Greater and Lesser Tunbs from the Emirates of Sharjah and Ras Al Khaimah.
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I588715.php : accessed January 23, 2026), "Jan de Vries (1889-1971)".
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