February 18 » Second Boer War: Imperial forces suffer their worst single-day loss of life on Bloody Sunday, the first day of the Battle of Paardeberg.
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 1 » The Scofield Mine disaster kills over 200 men in Scofield, Utah in what is to date the fifth-worst mining accident in United States history.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
July 19 » The first line of the Paris Métro opens for operation.
October 25 » The United Kingdom annexes the Transvaal.
Day of death February 12, 1901
The temperature on February 12, 1901 was between -5.0 °C and 3.5 °C and averaged -1.7 °C. There was 4.5 hours of sunshine (46%). Source: KNMI
February 20 » The legislature of Hawaii Territory convenes for the first time.
May 3 » The Great Fire of 1901 begins in Jacksonville, Florida.
July 24 » O. Henry is released from prison in Columbus, Ohio, after serving three years for embezzlement from a bank.
August 6 » Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation.
October 29 » Leon Czolgosz, the assassin of U.S. President William McKinley, is executed by electrocution.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
When copying data from this family tree, please include a reference to the origin: Wim Helsdingen, "Family tree Helsdingen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-helsdingen/I414.php : accessed February 16, 2026), "Hendrik Jan Helsdingen (1900-1901)".
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