April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
Day of death May 1, 1937
The temperature on May 1, 1937 was between 7.9 °C and 14.1 °C and averaged 9.8 °C. There was 6.6 hours of sunshine (44%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 15 » Spanish Civil War: Nationalists and Republican both withdraw after suffering heavy losses, ending the Second Battle of the Corunna Road.
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.
July 24 » Alabama drops rape charges against the "Scottsboro Boys".
December 21 » Snow White and the Seven Dwarfs, the world's first full-length animated feature, premieres at the Carthay Circle Theatre.
When copying data from this family tree, please include a reference to the origin: Ton Deunhouwer, "Family tree Dullemen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dullemen/I331.php : accessed March 17, 2026), "Maria van INGEN (-1937)".
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