The God-Idea of the Ancients / or Sex in Religion

A Text-Book of Astronomy

The Biology, Physiology and Sociology of Reproduction / Also Sexual Hygiene with Special Reference to the Male

Text Book of Biology, Part 1: Vertebrata

The Book of Religions / Comprising the Views, Creeds, Sentiments, or Opinions, of All the Principal Religious Sects in the World, Particularly of All Christian Denominations in Europe and America, to Which are Added Church and Missionary Statistics, Toget

The Mystic Will. A Method of Developing and Strengthening the Faculties of the Mind, through the Awakened Will, by a Simple, Scientific Process Possible to Any Person of Ordinary Intelligence

Sex in Education / or, A Fair Chance for Girls

Sane Sex Life and Sane Sex Living / Some Things That All Sane People Ought to Know About Sex Nature and Sex Functioning; Its Place in the Economy of Life, Its Proper Training and Righteous Exercise

Mental Efficiency / And Other Hints to Men and Women

The History of the Devil / As Well Ancient as Modern: In Two Parts

Religion and Lust / or, The Psychical Correlation of Religious Emotion and Sexual Desire