January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
February 1 » La bohème premieres in Turin at the Teatro Regio (Turin), conducted by the young Arturo Toscanini.
May 27 » The F4-strength St. Louis–East St. Louis tornado hits in St. Louis, Missouri, and East St. Louis, Illinois, killing at least 255 people and causing over $10-million in damage.
June 2 » Guglielmo Marconi applies for a patent for his wireless telegraph.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
November 27 » Also sprach Zarathustra by Richard Strauss is first performed.
Day of death April 25, 1968
The temperature on April 25, 1968 was between 2.8 °C and 17.2 °C and averaged 10.3 °C. There was 0.1 mm of rain. There was 10.6 hours of sunshine (73%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 22 » Apollo 5 lifts off carrying the first Lunar module into space.
February 1 » Canada's three military services, the Royal Canadian Navy, the Canadian Army and the Royal Canadian Air Force, are unified into the Canadian Forces.
April 4 » Apollo program: NASA launches Apollo 6.
August 13 » Alexandros Panagoulis attempts to assassinate the Greek dictator Colonel Georgios Papadopoulos in Varkiza, Athens.
August 21 » Cold War: Nicolae Ceaușescu, leader of Communist Romania, publicly condemns the Soviet-led Warsaw Pact invasion of Czechoslovakia, encouraging the Romanian population to arm itself against possible Soviet reprisals.
December 24 » Apollo program: The crew of Apollo 8 enters into orbit around the Moon, becoming the first humans to do so. They performed ten lunar orbits and broadcast live TV pictures.
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I560392.php : accessed January 27, 2026), "Einar Halvorsen (Haagensen) (1896-1968)".
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