The temperature on October 11, 1911 was between 2.2 °C and 14.4 °C and averaged 7.9 °C. There was 3.2 hours of sunshine (29%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
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.
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: Leen Schaap, "Database Schaap", database, Genealogy Online (https://www.genealogieonline.nl/database-schaap/I1123.php : accessed January 4, 2026), "Helena Prins (1890-????)".
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