June 12 » Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
June 13 » Yukon Territory is formed, with Dawson chosen as its capital.
June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
July 3 » A Spanish squadron, led by Pascual Cervera y Topete, is defeated by an American squadron under William T. Sampson in the Battle of Santiago de Cuba.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
October 6 » Phi Mu Alpha Sinfonia, the largest American music fraternity, is founded at the New England Conservatory of Music.
Day of death September 6, 1938
The temperature on September 6, 1938 was between 6.7 °C and 18.1 °C and averaged 12.6 °C. There was 8.4 hours of sunshine (63%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
January 3 » The March of Dimes is established as a foundation to combat infant polio by President Franklin D. Roosevelt.
January 28 » The World Land Speed Record on a public road is broken by Rudolf Caracciola in the Mercedes-Benz W195 at a speed of 432.7 kilometres per hour (268.9mph).
March 12 » Anschluss: German troops occupy and absorb Austria.
September 23 » The Czechoslovak army is mobilized in response to the Munich Agreement.
October 14 » The first flight of the Curtiss P-40 Warhawk fighter plane.
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: Henry van Niel, "Family tree Seijffer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-seijffer/R111.php : accessed February 27, 2026), "Hendrik David Frederik Seijffer (1898-1938)".
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