May 29 » In the May Coup, Alexander I, King of Serbia, and Queen Draga, are assassinated in Belgrade by the Black Hand (Crna Ruka) organization.
July 1 » Start of first Tour de France bicycle race.
July 19 » Maurice Garin wins the first Tour de France.
July 20 » The Ford Motor Company ships its first automobile.
July 23 » The Ford Motor Company sells its first car.
September 11 » The first race at the Milwaukee Mile in West Allis, Wisconsin is held. It is the oldest major speedway in the world.
Day of death July 6, 1971
The temperature on July 6, 1971 was between 13.1 °C and 25.1 °C and averaged 19.4 °C. There was 14.7 hours of sunshine (89%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
February 26 » U.N. Secretary-General U Thant signs United Nations proclamation of the vernal equinox as Earth Day.
May 19 » Mars probe program: Mars 2 is launched by the Soviet Union.
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.
October 12 » The 2,500 year celebration of the Persian Empire begins.
December 4 » The PNS Ghazi, a submarine belonging to the Pakistan Navy, sinks during the course of the Indo-Pakistani Naval War of 1971.
December 6 » Pakistan severs diplomatic relations with India, initiating the Indo-Pakistani War of 1971.
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/I113218.php : accessed February 18, 2026), "Lieuwe de Vries (1903-1971)".
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