The temperature on June 18, 1928 was between 7.2 °C and 15.8 °C and averaged 11.6 °C. There was 0.9 mm of rain. There was 8.3 hours of sunshine (50%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
March 12 » In California, the St. Francis Dam fails; the resulting floods kill 431 people.
September 28 » Alexander Fleming notices a bacteria-killing mold growing in his laboratory, discovering what later became known as penicillin.
October 10 » Chiang Kai-shek becomes Chairman of the Republic of China.
October 12 » An iron lung respirator is used for the first time at Children's Hospital, Boston.
November 18 » Release of the animated short Steamboat Willie, the first fully synchronized sound cartoon, directed by Walt Disney and Ub Iwerks, featuring the third appearances of cartoon characters Mickey Mouse and Minnie Mouse. This is considered by the Disney corporation to be Mickey's birthday.
December 13 » George Gershwin's An American in Paris is first performed.
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The Family tree Doppenberg publication was prepared by Henk Doppenberg (contact is not possible).
When copying data from this family tree, please include a reference to the origin: Henk Doppenberg, "Family tree Doppenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-doppenberg/I5775.php : accessed January 20, 2026), "N.N. Timmer (1928)".
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