January 18 » An X-ray generating machine is exhibited for the first time by H. L. Smith.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
June 2 » Guglielmo Marconi applies for a patent for his wireless telegraph.
June 15 » The deadliest tsunami in Japan's history kills more than 22,000 people.
December 14 » The Glasgow Underground Railway is opened by the Glasgow District Subway Company.
December 30 » Canadian ice hockey player Ernie McLea scores the first hat-trick in Stanley Cup play, and the Cup-winning goal as the Montreal Victorias defeat the Winnipeg Victorias 6–5.
Day of death May 27, 1975
The temperature on May 27, 1975 was between 7.7 °C and 20.3 °C and averaged 14.6 °C. There was 7.4 hours of sunshine (46%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. 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.
April 29 » Vietnam War: Operation Frequent Wind: The U.S. begins to evacuate U.S. citizens from Saigon before an expected North Vietnamese takeover. U.S. involvement in the war comes to an end.
May 6 » During a lull in fighting, 100,000 Armenians gather in Beirut for the 60th anniversary commemorations of the Armenian Genocide.
July 6 » The Comoros declares independence from France.
September 4 » The Sinai Interim Agreement relating to the Arab–Israeli conflict is signed.
October 22 » The Soviet unmanned space mission Venera 9 lands on Venus.
When copying data from this family tree, please include a reference to the origin: Leo Petri, "Family tree Petri", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-petri/I2201.php : accessed March 6, 2026), "Marie SCHNABEL (1896-1975)".
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