Forget Freud. Today, we’re snooping around the personal archives of Richard von Krafft-Ebing, a 19th century psychoanalyst and sexologist extraordinaire who history has often been forgotten despite his groundbreaking research in sexual pathology. His chef d’oeuvre is undoubtedly Psychopathia Sexualis, the book that made jaws drop across Europe in 1886 and the first-ever scientific study on sexual…