The Encyclopedia of Hell: A Comprehensive Survey of the Underworld
The Book of Fallen Angels
The Books of Enoch: The Angels, The Watchers and The Nephilim: (With Extensive Commentary on the Three Books of Enoch, the Fallen Angels, the Calendar of Enoch, and Daniel's Prophecy)
Devils and Demons and the Return of the Nephilim
Encyclopaedia of Hell: An Invasion Manual for Demons Concerning the Planet Earth and the Human Race Which Infests It
Fallen Angels Among Us: What You Need to Know
Fallen Angels, the Watchers, and the Origins of Evil
Fallen Angels and the Origins of Evil
Encyclopedia of the Undead: A Field Guide to the Creatures That Cannot Rest in Peace