January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 6 » The Permanent Court of Arbitration, an international arbitration court at The Hague, is created when the Senate of the Netherlands ratifies an 1899 peace conference decree.
February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
July 19 » The first line of the Paris Métro opens for operation.
August 14 » The Eight-Nation Alliance occupies Beijing, China, in a campaign to end the bloody Boxer Rebellion in China.
October 9 » The Cook Islands become a territory of the United Kingdom.
Day of death April 6, 1939
The temperature on April 6, 1939 was between 3.3 °C and 8.1 °C and averaged 6.5 °C. There was 5.9 mm of rain during 3.2 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
March 15 » Carpatho-Ukraine declares itself an independent republic, but is annexed by Hungary the next day.
March 26 » Spanish Civil War: Nationalists begin their final offensive of the war.
April 1 » Spanish Civil War: Generalísimo Francisco Franco of the Spanish State announces the end of the Spanish Civil War, when the last of the Republican forces surrender.
August 27 » First flight of the turbojet-powered Heinkel He 178, the world's first jet aircraft.
September 4 » World War II: William J. Murphy commands the first Royal Air Force attack on Germany.
December 27 » The 7.8 Mw Erzincan earthquake shakes eastern Turkey with a maximum Mercalli intensity of XI (Extreme). At least 32,700 people were killed.
When copying data from this family tree, please include a reference to the origin: Christa Berlinger, "Family tree Berlinger, De Jong, Janssen, Overbeek", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-berlinger/I3520.php : accessed February 15, 2026), "Gradus Hendrikus WISSELINK (1870-1939)".
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