Klaus H. Carl is the author of numerous works on the history of great cities, and is also a well-known photographer of flora and fauna. A teacher by profession, he is currently devoting himself to a monumental History of Art.Victoria Charles received her Ph.D. in art history. She has published extensively on art history and has contributed to Art Information, an international guide to contemporary art. She is a regular contributor to journals and magazines.Hans-Jurgen Dopp taught for a number of years at the Johann Wolfgang Goethe University in Frankfurt, where he held a chair of psychoanalytical interpretation, as well as the cultural history of erotic art. For the past thirty years, he has been an avid collector of erotic art and has gained international recognition through various exhibitions and publications. Joe A.Thomas is an associate professor at the Clarion University of Pennsylvania. His research is centered especially on the representation of sexuality, and he is currently researching the role of eroticism in Pop Art.