The temperature on April 28, 1937 was between 2.9 °C and 13.5 °C and averaged 8.5 °C. There was 4.1 hours of sunshine (28%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
January 15 » Spanish Civil War: Nationalists and Republican both withdraw after suffering heavy losses, ending the Second Battle of the Corunna Road.
February 11 » The Flint sit-down strike ends when General Motors recognizes the United Auto Workers trade union.
February 19 » Yekatit 12: During a public ceremony at the Viceregal Palace (the former Imperial residence) in Addis Ababa, Ethiopia, two Ethiopian nationalists of Eritrean origin attempt to kill viceroy Rodolfo Graziani with a number of grenades.
March 18 » The New London School explosion in New London, Texas, kills 300 people, mostly children.
April 26 » Spanish Civil War: Guernica, Spain, is bombed by German Luftwaffe.
December 11 » Second Italo-Ethiopian War: Italy leaves the League of Nations.
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I600383.php : accessed January 24, 2026), "William van der Heul (1937-2022)".
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