February 23 » Cuba leases Guantánamo Bay to the United States "in perpetuity".
March 14 » Pelican Island National Wildlife Refuge, the first national wildlife refuge in the US, is established by President Theodore Roosevelt.
April 19 » The Kishinev pogrom in Kishinev (Bessarabia) begins, forcing tens of thousands of Jews to later seek refuge in Palestine and the Western world.
August 2 » The Ilinden–Preobrazhenie Uprising against the Ottoman Empire begins.
August 3 » Macedonian rebels in Kruševo proclaim the Kruševo Republic, which exists for only ten days before Ottoman Turks lay waste to the town.
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
Day of death August 17, 1940
The temperature on August 17, 1940 was between 8.6 °C and 19.4 °C and averaged 14.7 °C. There was 1.3 hours of sunshine (9%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 7 » The second full-length animated Walt Disney film, Pinocchio, premieres.
February 29 » In a ceremony held in Berkeley, California, physicist Ernest Lawrence receives the 1939 Nobel Prize in Physics from Sweden's Consul General in San Francisco.
April 9 » World War II: Operation Weserübung: Germany invades Denmark and Norway.
May 14 » World War II: Rotterdam, Netherlands is bombed by the Luftwaffe of Nazi Germany despite a ceasefire, killing about 900 people and destroying the historic city center.
July 27 » The animated short A Wild Hare is released, introducing the character of Bugs Bunny.
September 12 » An explosion at the Hercules Powder Company plant in Kenvil, New Jersey kills 51 people and injures over 200.
When copying data from this family tree, please include a reference to the origin: Jan Willem Graafmans, "Family tree Graafmans", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-graafmans/R8097.php : accessed February 15, 2026), "Maria van den Boom (-1940)".
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