Rüdiger Lautmann has been a professor of Sociology at the University of Bremen, Germany, since 1971. A specialist in the study of gender and the sociology of human sexuality, Professor Lautmann is an expert on the reaction of German society to homosexuality in the twentieth-century. For over two decades, Professor Lautmann’s work has been at the center of studies on the persecution of homosexuals by the Nazis. His notable achievements in the field include the publication in 1977 of a comprehensive socio-historical study on all known homosexuals who were incarcerated in Nazi concentration camps. Dr. Lautmann has edited several books since the late 1970s, among them a historical reference work on the discussion of homosexuality in the German scientific community. Professor Lautmann is also the author of several journal articles about homosexuality in Germany, two of which were published in the United States in the Journal of Homosexuality.