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.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of death June 17, 1966
The temperature on June 17, 1966 was between 14.0 °C and 27.9 °C and averaged 19.5 °C. There was 11.6 mm of rain during 1.2 hours. There was 8.6 hours of sunshine (51%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
February 2 » Pakistan suggests a six-point agenda with Kashmir after the Indo-Pakistani War of 1965.
February 3 » The Soviet Union's Luna 9 becomes the first spacecraft to make a soft landing on the Moon, and the first spacecraft to take pictures from the surface of the Moon.
March 4 » In an interview in the London Evening Standard, The Beatles' John Lennon declares that the band is "more popular than Jesus now".
March 31 » The Soviet Union launches Luna 10 which later becomes the first space probe to enter orbit around the Moon.
June 2 » Surveyor program: Surveyor 1 lands in Oceanus Procellarum on the Moon, becoming the first U.S. spacecraft to soft-land on another world.
November 15 » Project Gemini: Gemini 12 completes the program's final mission, when it splashes down safely in the Atlantic Ocean.
When copying data from this family tree, please include a reference to the origin: Hans Eijken, "Family tree Eijken", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijken/I2326.php : accessed February 27, 2026), "Cornelia Antonia Holtkamp (1897-1966)".
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