The Blue Book of Chess / Teaching the Rudiments of the Game, and Giving an Analysis of All the Recognized Openings

Advanced Chemistry

Taboo and Genetics / A Study of the Biological, Sociological and Psychological Foundation of the Family

An Elementary Study of Chemistry

Applied Psychology for Nurses

Miracles and Supernatural Religion

The Wonders of Instinct / Chapters in the Psychology of Insects

How To Behave: A Pocket Manual Of Republican Etiquette, And Guide To Correct Personal Habits / Embracing An Exposition Of The Principles Of Good Manners; / Useful Hints On The Care Of The Person, Eating, Drinking, / Exercise, Habits, Dress, Self-Culture

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

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

The Psychology of Nations / A Contribution to the Philosophy of History