The temperature on June 23, 1937 was between 9.9 °C and 22.2 °C and averaged 15.6 °C. There was 14.0 hours of sunshine (84%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
April 1 » Spanish Civil War: Jaén, Spain is bombed by German fascist forces, supporting Francoist Nationalists.
May 30 » Memorial Day massacre: Chicago police shoot and kill ten labor demonstrators.
June 11 » Great Purge: The Soviet Union under Joseph Stalin executes eight army leaders.
June 15 » A German expedition led by Karl Wien loses sixteen members in an avalanche on Nanga Parbat. It is the worst single disaster to occur on an 8000m peak.
July 8 » Turkey, Iran, Iraq and Afghanistan sign the Treaty of Saadabad.
November 8 » The Nazi exhibition Der ewige Jude ("The Eternal Jew") opens in Munich.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I92496.php : accessed May 6, 2025), "Piet Roestenburg (1913-)".
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