“The History of Prostitution” is a scientific work by the German dermatovenerologist and sexologist Ivan Bloch (German: Iwan Bloch, 1872-1922).*** Without exaggeration, this is a real encyclopedia dedicated to the “most ancient profession”. The author describes in detail all aspects of this phenomenon - from the historical origins of prostitution and its organization during Antiquity and the Middle Ages to male prostitution, clientele and fees. Ivan Bloch is famous for being the first to introduce the term “sexology” into science. He seriously studied the theory of sexuality and was one of the founders of the Medical Society for Sexology and Eugenics.