Studies in the Psychology of Sex, Volume 3 / Analysis of the Sexual Impulse; Love and Pain; The Sexual Impulse in Women

Studies in the Psychology of Sex, Volume 1 / The Evolution of Modesty; The Phenomena of Sexual Periodicity; Auto-Erotism

Studies in the Psychology of Sex, Volume 4 / Sexual Selection In Man

Power of Mental Imagery / Being the Fifth of a Series of Twelve Volumes on the / Applications of Psychology to the Problems of Personal and / Business Efficiency

Applied Psychology: Driving Power of Thought / Being the Third in a Series of Twelve Volumes on the / Applications of Psychology to the Problems of Personal and / Business Efficiency