The Complete Works of Saint John of the Cross: All Volumes

Interior Castle (Dover Thrift Editions)

The Complete Works of Saint John of the Cross, Volume 1 of 2

The Way of Perfection by Saint Teresa of Avila (A Christian classic!)

The Complete Works of Saint Augustine: The Confessions, On Grace and Free Will, The City of God, On Christian Doctrine, Expositions on the Book Of Psalms, ... (50 Books With Active Table of Contents)

Revelations of Divine Love

The Lives of the Saints: Complete Edition

The Saint Francis de Sales Collection [16 Books]

Dark Night of the Soul (Dover Thrift Editions)

The Complete Works of the Church Fathers: A total of 64 authors, and over 2,500 works of the Early Christian Church

An Exorcist Explains the Demonic: The Antics of Satan and His Army of Fallen Angels