February 9 » The Davis Cup competition is established.
February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
June 14 » Hawaii becomes a United States territory.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
June 20 » Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
Day of death July 22, 1901
The temperature on July 22, 1901 was between 14.7 °C and 21.6 °C and averaged 18.2 °C. There was 1.9 hours of sunshine (12%). Source: KNMI
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/I133353.php : accessed October 24, 2026), "Gerrit Koolstra (1900-1901)".
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