The temperature on April 30, 1928 was between 10.3 °C and 15.0 °C and averaged 13.0 °C. There was 2.0 mm of rain. There was 0.4 hours of sunshine (3%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
March 12 » In California, the St. Francis Dam fails; the resulting floods kill 431 people.
July 7 » Sliced bread is sold for the first time (on the inventor's 48th birthday) by the Chillicothe Baking Company of Chillicothe, Missouri.
September 18 » Juan de la Cierva makes the first autogyro crossing of the English Channel.
September 28 » Alexander Fleming notices a bacteria-killing mold growing in his laboratory, discovering what later became known as penicillin.
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.
When copying data from this family tree, please include a reference to the origin: Gerrit Thesing, "Family tree Thesing", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-thesing/I751.php : accessed January 7, 2026), "Folkje de Vries (-1928)".
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