Träume eines Geistersehers, erläutert durch Träume der Metaphysik

A Book Written by the Spirits of the So-Called Dead

Letters from a living dead man

Emanuel Swedenborg's Investigations in Natural Science and the Basis for His Statements Concerning the Functions of the Brain

Preliminary Report of the Commission Appointed by the University of Pennsylvania to Investigate Modern Spiritualism In Accordance with the Request of the Late Henry Seybert

Six metaphysical meditations

The Case Against Spirit Photographs

The New Revelation

The Astral World—Higher Occult Powers Clairvoyance, Spiritism, Mediumship, and Spirit-Healing Fully Explained

The Case for Spirit Photography With corroborative evidence by experienced researchers and photographers

Elements of metaphysics

A Magician Among the Spirits