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Kai was born in 1931, but the correct date is February 12, not December 2. Someone most likely misinterpreted the European style of dates (12/2/1931)
Can somebody please check if 1931 really is correct? In his father's biographies there is frequently stated that the wedding took place in spring 1930, with Joan pregnant already with Kai. One of the informations must be wrong. --Stilfehler (talk) 13:42, 17 September 2016 (UTC)[reply]
