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.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
December 30 » The British Colony of Natal annexes Zululand.
Day of death May 14, 1975
The temperature on May 14, 1975 was between 9.0 °C and 16.8 °C and averaged 12.7 °C. There was -0.1 mm of rain. There was 5.5 hours of sunshine (35%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
February 28 » In London, an underground train fails to stop at Moorgate terminus station and crashes into the end of the tunnel, killing 43 people.
March 26 » The Biological Weapons Convention comes into force.
April 28 » General Cao Văn Viên, chief of the South Vietnamese military, departs for the US as the North Vietnamese Army closed in on victory.
June 1 » The Patriotic Union of Kurdistan was founded by Jalal Talabani, Nawshirwan Mustafa, Fuad Masum and others.
June 5 » The Suez Canal opens for the first time since the Six-Day War.
September 24 » Southwest Face expedition members become the first persons to reach the summit of Mount Everest by any of its faces, instead of using a ridge route.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I195586.php : accessed January 18, 2026), "Maria van Doorn (1897-1975)".
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