The temperature on April 2, 1938 was between 6.4 °C and 10.1 °C and averaged 8.0 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
June 7 » The Douglas DC-4E makes its first test flight.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
July 31 » Archaeologists discover engraved gold and silver plates from King Darius the Great in Persepolis.
July 31 » Bulgaria signs a non-aggression pact with Greece and other states of Balkan Antanti (Turkey, Romania, Yugoslavia).
October 5 » In Nazi Germany, Jews' passports are invalidated.
November 9 » The Nazi German diplomat Ernst vom Rath dies from gunshot wounds by Herschel Grynszpan, an act which the Nazis used as an excuse to instigate the 1938 national pogrom, also known as Kristallnacht.
When copying data from this family tree, please include a reference to the origin: Hans Pruckmuller, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/van-willigen-stamboom/I990.php : accessed January 6, 2026), "Dieuwerke Pilon (1855-1938)".
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