Anand, Margo, The Art of Sexual Ecstasy: The Path of Sacred Sexuality for Western Lovers. An extensive course in understanding sexual energy, genital physiology, enhancing pleasure and deepening intimacy from the seminar expert.
www.margotanand.com

Gray, John, Men Are From Mars, Women Are From Venus. The challenging, the funny, the utilitarian classic.
www.marsvenus.com

Palmer, Helen and Daniels, David, The Enneagram in Love & Work : Understanding Your Intimate & Business Relationships. How to use your Enneatype personality style to learn about your interaction.
www.heall.com

Schnarch, David, Passionate Marriage: Sex, Love and Intimacy in Emotionally Committed Relationships. Renowned sex and marital therapist uses case histories to illustrate how keeping passion and intimacy alive requires facing the anxiety of defining yourself while getting closer to your partner. Also, author of The Sexual Crucible.
www.passionatemarriage.com

Schwartz, Pepper, Peer Marriage: How Love Between Equals Really Works. This book defines and describes a "peer marriage," differentiating it from traditional or "near-peer" relationships. Special attention is focused on the rewards of deep friendship in peer marriages, the risks to sexual passion, and the experience of sharing the provider role and the care of children. A frank look at the rewards and challenges inherent in a truly egalitarian marriage.
http://faculty.washington.edu/couples/books.htm

National Resource Directory from Smart Marriages in Washington, DC.
www.smartmarriages.com