The temperature on March 18, 1911 was between -0.4 °C and 6.8 °C and averaged 2.7 °C. There was 2.9 hours of sunshine (24%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
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.
When copying data from this family tree, please include a reference to the origin: Hanja Kall, "Kall Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kall-family-tree/P514.php : accessed May 5, 2025), "Mary Ann Greer (????-1911)".
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