The Origins of the Christian Mystical Tradition from Plato to Denys by Andrew Louth (Oxford University Press) is an excellent book. It is fairly difficult reading, and the subject matter is bewildering at times, but Louth is great at making connections and showing the development of mystical theology. I read this in seminary, and my copy is heavily marked up. It would make a good addition to the Logos offerings. There would be lots of cross-references to other Logos resources.
From Amazon.com: "Originally given as a series of lectures in the Faculty of Theology at the Oxford University, The Origins of the Christian Mystical Tradition is a superb introduction to the sometimes fog-filled subject of Christian mysticism. Focusing on the early centuries of the faith, Louth first explores the influence of Plato and Platonism on Christian writers, and then devotes individual chapters to key theologians: Athanasius and Gregory of Nyssa, Augustine, and Denys the Areopagite, also known as Pseudo-Dionysius. In his final two chapters he looks at the relationship between the mysticism of the early church fathers and that of St. John of the Cross, perhaps the most influential mystic in the history of the church, and he explores the distinctive character of Christian mysticism. While challenging reading, Louth is a clear and straightforward thinker and writer."
Table of Contents
Preface
I. Plato
II. Philo
III. Plotinus
IV. Origen
V. Nicene Orthodoxy
VI. The Monastic Contribution
VII. Augustine
VIII. Denys the Areopagite
IX. Patristic Mysticism and St. John of the Cross
X. The Mystical Life and the Mystical Body
Bibliography
Index
