February 2 » The Australian Premiers' Conference held in Melbourne decides to locate Australia's capital city, Canberra, between Sydney and Melbourne.
February 4 » The Philippine–American War begins with the Battle of Manila.
February 16 » Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
May 30 » Pearl Hart, a female outlaw of the Old West, robs a stage coach 30 miles southeast of Globe, Arizona.
June 12 » New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
Day of death May 13, 1960
The temperature on May 13, 1960 was between 11.2 °C and 24.1 °C and averaged 16.3 °C. There was 4.0 mm of rain during 1.6 hours. There was 1.1 hours of sunshine (7%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 28 » The National Football League announced expansion teams for Dallas to start in the 1960 NFL season and Minneapolis-St. Paul for 1961 NFL season.
July 8 » Francis Gary Powers is charged with espionage resulting from his flight over the Soviet Union.
July 28 » The German Volkswagen Act came into force.
September 5 » Poet Léopold Sédar Senghor is the first elected President of Senegal.
September 24 » USSEnterprise, the world's first nuclear-powered aircraft carrier, is launched.
November 14 » Ruby Bridges becomes the first black child to attend an all-white elementary school in Louisiana.
When copying data from this family tree, please include a reference to the origin: Dirk Kalksma, "Family tree Kalksma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kalksma/I528.php : accessed March 16, 2026), "Pieter Johannes Wytze Kalksma (1899-1960)".
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