Dion Fortune books in order
16 books in the catalogue, about 75 hours of reading in all; the shortest takes 2 hours and the longest 19 hours.
16 standalone books in the catalogue.
Standalone books
The Esoteric Philosophy of Love and Marriage 2.4 h 
The Secrets of Dr. Taverner 4.5 h 
The Esoteric Orders and Their Work 2.8 h 
Sane Occultism 3.5 h 
Psychic Self-defence 3.8 h 
The Training and Work of an Initiate 2.3 h 
The Mystical Qabalah 5.9 h 
Moon Magic 4.4 h 
The Sea Priestess 5.8 h 
Applied Magic 2.4 h 
The Goat-Foot God 7.0 h 
Aspects of Occultism 1.6 h 
The Hounds of Hell 3.5 h 
The Cosmic Doctrine 2.9 h 
What Is Occultism? 3.7 h 
The Vampire Archives 18.9 h