The temperature on January 19, 1911 was between 3.5 °C and 5.4 °C and averaged 4.1 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
March 25 » In New York City, the Triangle Shirtwaist Factory fire kills 146 garment workers.
August 14 » United States Senate leaders agree to rotate the office of President pro tempore of the Senate among leading candidates to fill the vacancy left by William P. Frye's death.
September 29 » Italy declares war on the Ottoman Empire.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
When copying data from this family tree, please include a reference to the origin: Bob Smith, "Family tree Smith", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-smith/I7623.php : accessed February 25, 2026), "Gerrit van Helden (± 1881-????)".
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