Ada Kok
Aagje ("Ada") Kok (born 6 June 1947, in Amsterdam, North Holland) is a Dutch former swimmer who ranked among the world's best in the butterfly stroke category during the 1960s.She was also good at freestyle swimming, which showed when she took second place in the 400 metres at the 1966 European Championships in Utrecht.She won the gold medal in the 200 meter butterfly race in a time of 2:24.7, beating the East German Helga Lindner by 0.1 seconds.The 100 meter butterfly race in that Olympic Games ended in disappointment for her, when she did not feel well beforehand, and finished in fourth place..Fortunately, I was able to keep in front.In her memoirs written by Henk Lichtenveldt, she stated: Approaching the podium of honor I felt like I was walking on clouds.