the institute was for instance visited by Nikolai Semashko, Commissar for Health in the Soviet Union. This was followed by numerous visits and research trips by health officials, political, sexual and social reformers, and scientific researchers from the Soviet Union interested in the work of Hirschfeld. In June 1926 a delegation from the institute, led by Hirschfeld, reciprocated with a research visit to Moscow and Leningrad. One particular fixture at the institute which aided its popularity was its museum of sexual subjects. This was built with both education and entertainment in mind. There were ethnographic displays about different sexual norms across different cultures internationally. It included exhibits about sexual fetishism and sadomasochism. A collection of phallic artifacts from around the world was also exhibited. Additionally, there were presentations regarding the diversity of human sexual orientation, particularly with regards to homosexuality. Upon visiting the institute, Dora Russell reflected that it was "where the results of researches into various sex problems and perversions could be seen in records and photographs." The neighboring property purchased in 1922 by the institute had an opening ceremony on 5 March 1922, after which it became a place for the institute's staff to interact with the public in an educational capacity. Lectures and question-and-answer sessions were held there to inform laypersons on topics of sexuality. The public especially tended to ask questions regarding contraception. Sexual and reproductive health One focus of the institute's research and services was sexual and reproductive health. A subdivision of the institute called the Eugenics Department for Mother and Child offered marital counseling services, and the Center of Sexual Counseling for Married Couples provided access to contraception. It was especially a goal of the institute to make contraceptive services accessible to the poor and working-class of Germany. This was despite a prohibition on advertising birth control in the Weimar Republic's constitution. Following looser regulation on advertising contraceptive methods, the institute published an educational pamphlet on the matter in 1928 which ultimately reached a distribution of about 100,000 copies by 1932. Hirschfeld and Hodann developed pioneering strategies for sex counseling services that would inspire later practices. The institute also offered general gynecology services and treatment for venereal diseases. Experimental treatments for impotence were also implemented. Sexual intermediacy At the institute, Magnus Hirschfeld championed the doctrine of sexual intermediacy. This proposed form of classification said that every human trait existed on a scale from masculine