January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
March 7 » Second Boer War: Boers, led by Koos de la Rey, inflict the biggest defeat upon the British since the beginning of the war, at Tweebosch.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
Day of marriage May 12, 1926
The temperature on May 12, 1926 was between 8.1 °C and 15.1 °C and averaged 11.4 °C. There was 4.9 mm of rain. There was 4.1 hours of sunshine (26%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 8 » Crown Prince Nguyễn Phúc Vĩnh Thuỵ ascends the throne to become the last monarch of Vietnam.
April 6 » Varney Airlines makes its first commercial flight (Varney is the root company of United Airlines).
May 12 » The Italian-built airship Norge becomes the first vessel to fly over the North Pole.
August 6 » Gertrude Ederle becomes the first woman to swim across the English Channel.
August 6 » In New York City, the Warner Bros.' Vitaphone system premieres with the movie Don Juan starring John Barrymore.
August 20 » Japan's public broadcasting company, Nippon Hōsō Kyōkai (NHK) is established.
Day of death August 14, 1971
The temperature on August 14, 1971 was between 13.5 °C and 20.1 °C and averaged 17.0 °C. There was 2.1 mm of rain during 1.8 hours. There was 1.4 hours of sunshine (9%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
July 30 » Apollo program: Apollo 15 Mission: David Scott and James Irwin on the Apollo Lunar Module Falcon land on the Moon with the first Lunar Rover.
August 22 » J. Edgar Hoover and John Mitchell announce the arrest of 20 of the Camden 28.
September 9 » The four-day Attica Prison riot begins, eventually resulting in 39 dead, most killed by state troopers retaking the prison.
September 28 » The Parliament of the UK passes the Misuse of Drugs Act 1971, banning the medicinal use of cannabis.
November 28 » Fred Quilt, a leader of the Tsilhqot'in First Nation suffers severe abdominal injuries allegedly caused by Royal Canadian Mounted Police officers; he dies two days later.
December 20 » The international aid organization Doctors Without Borders is founded by Bernard Kouchner and a group of journalists in Paris, France.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I80316.php : accessed February 19, 2026), "Gerritdina Johanna Kolkman (1902-1971)".
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