March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
March 24 » Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn.
May 17 » Second Boer War: British troops relieve Mafeking.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
November 7 » Second Boer War: Battle of Leliefontein, a battle during which the Royal Canadian Dragoons win three Victoria Crosses.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death June 15, 1901
The temperature on June 15, 1901 was between 6.3 °C and 16.0 °C and averaged 11.6 °C. There was 5.6 hours of sunshine (33%). Source: KNMI
March 2 » United States Steel Corporation is founded as a result of a merger between Carnegie Steel Company and Federal Steel Company which became the first corporation in the world with a market capital over $1 billion.
July 4 » William Howard Taft becomes American governor of the Philippines.
July 24 » O. Henry is released from prison in Columbus, Ohio, after serving three years for embezzlement from a bank.
October 24 » Annie Edson Taylor becomes the first person to go over Niagara Falls in a barrel.
November 27 » The U.S. Army War College is established.
When copying data from this family tree, please include a reference to the origin: Jaap Geensen, "Geensen database", database, Genealogy Online (https://www.genealogieonline.nl/geensen-database/I859.php : accessed October 17, 2026), "Metje Geense (1900-1901)".
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