In 1932, the renowned dermatovenerologist Professor Antonín Trýb from Brno, together with his close collaborator Josef Weisskopf were the main organizers of the Fifth Congress of the ‘World League for Sexual Reform’ (WLSR) which took place in Brno in September 1932. It was to be the last session of this organisation: WLSR was banned shortly after the Nazi takeover in Germany. Jan Raboch (1917-2002) headed Prague’s Sexological Institute from 1974 to 1989.
The scope of his research and publication activities has been and remains quite remarkable. Most of his works are still relevant: strictly speaking, in 1977, he was elected President of the IASR (International Academy of Sex Research). The history of the Czech sexology would be incomplete without mentioning Prague’s prominent sexologist Kurt Freund (1916-1997). This scholar was the first researcher who used the penile tumescence method to determine the sexual orientation of males. From 1969, K. Freund lived and worked in Canada.