The Sex Side of Life / An Explanation for Young People

A Text-Book of Astronomy

The Sexual Life of the Child

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

Text Book of Biology, Part 1: Vertebrata