| title | media type | ISBN-13 | year of publication |
|---|
| Encyclopedia of the Strange, Mystical, and Unexplained | Hardcover | 978-0-517-16278-1 | 2001 |
| Harper's encyclopedia of mystical & paranormal experience | Paperback | 978-0-06-250365-7 | 1991 |
| Harper's Encyclopedia of Mystical and Para-Normal Experience | " | 978-0-06-250366-4 | 1991 |
| The Encyclopedia of Angels | " | 978-0-8160-5024-6 | 2004 |
| The Encyclopedia of Demons and Demonology | Hardcover | 978-0-8160-7314-6 | 2009 |
| The Encyclopedia of Demons and Demonology | Paperback | 978-0-8160-7315-3 | 2009 |
| The Encyclopedia of Ghosts and Spirits | Hardcover | 978-0-8160-6737-4 | 2007 |
| The Encyclopedia of Ghosts and Spirits | Paperback | 978-0-8160-6738-1 | 2007 |
| The Encyclopedia of Ghosts and Spirits | " | 978-0-8160-4086-5 | 2000 |
| The Encyclopedia of Ghosts and Spirits | Hardcover | 978-0-8160-2140-6 | 1992 |
| The Encyclopedia of Magic And Alchemy | Paperback | 978-0-8160-6048-1 | 2006 |
| The Encyclopedia of Magic And Alchemy | " | 978-0-8160-6049-8 | 2006 |
| The Encyclopedia of Saints | " | 978-0-8160-4134-3 | 2001 |
| The Encyclopedia Of Vampires, Werewolves, And Other Monsters | Hardcover | 978-0-8160-4684-3 | 2004 |
| The Encyclopedia of Vampires, Werewolves, and Other Monsters | Paperback | 978-0-8160-4685-0 | 2004 |
| The Encyclopedia of Witches and Witchcraft | Hardcover | 978-0-8160-3848-0 | 1999 |
| The Encyclopedia of Witches and Witchcraft | Paperback | 978-0-8160-3849-7 | 1999 |
| The Encyclopedia of Witches and Witchcraft | " | 978-0-8160-2268-7 | 1990 |
| The Encyclopedia of Witches, Witchcraft, and Wicca | Hardcover | 978-0-8160-7103-6 | 2008 |
| The Encyclopedia of Witches, Witchcraft, and Wicca | Paperback | 978-0-8160-7104-3 | 2008 |