Covici, Friede, 1933. Bonanza Books, 1956. Transgenderism is a complex topic, and professionals can give no easy answers. Cross dressing, sex, and gender. University of Pennsylvania Press, 1993.
Surveys cross dressing and gender impersonation throughout history in a variety of cultures.
Offers the authors' results of research into contemporary gender issues, and the continuing search for explanations. Anchor Books, 1996. Analyzing the latest research in psychology, genetics, neurology, and sociology, Burke finds that gender and sexuality are separate elements of the self. Cleis Press, 1997. Califia's meticulously researched analysis of the contemporary history of transsexuality combines a well thoughtout chronology with her hallmark candor and insight.