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"In his house at R'lyeh, dead Cthulhu waits dreaming..." - English translation of Aklo verse

This article is written on a topic within the Greater Cthulhu Mythos based on information from works in the Mythos. By default, all information is to be assumed to derive from the Lovecraft Myth Cycle unless otherwise marked.

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Grimoires are books of great importance or power and are the source of much of the forbidden knowledge that illuminates the darkest recesses of the world. These books contain forbidden knowledge and discoveries about the Great Old Ones or of many occult topics. Often times these discoveries of forbidden truths end up driving the reader insane or leading to their ruin in one way or another.

Complete List of Known GrimoiresEdit

Al-Azif (Necronomicon)[1]

Book of Azathoth[2]

Pnakotic Manuscripts[3]

Seven Cryptical Books of Hsan

Magnum Immonandum

The Dhol Chants[4]

Poakotic Fragments

Clay Cylinders of Kadethron[5]

Ars Magna et Ultima

Atlantis and the Lost Lemuria

Book of Dzyan

Confessions of Monk Clithanus

Celaeno Fragments[6]

The R'lyeh Text[7]

Investigations into the Myth-Patterns of Latter-Day Primitives, with Especial Reference to the "R'yleh Text"

Thaumaturgical Prodigies in the New-England Canaan

Cthulhu in the Necronomicon

Book of Eibon[8]

Parchments of Pnom

Testament of Carnamagos[9]

Unaussprechlichen Kulten[10]

De Vermis Mysteriis[11]

Cultes Des Goules

The Black Rites

Commentaries on Witchcraft

The Daemonolorum

De Masticatione Mortuorum in Tumulis

Revelations of Gla'aki[12]

Book of Iod

On the Sending Out of the Soul[13]

Eltdown Shards[14]

Chronike von Nath[15][16]

The Zanthu Tablets

Rituals of Yhe

Yuggia Chants

Ponape Scripture[17]

The Prehistoric Pacific in the Light of the "Ponape Scripture"

G'harne Fragments[18]

Cthäat Aquadingen[19]

Legend of the Olden Runes[20]


Legends of Liqualia[22]

In Pressured Places[23]


Unter Zee Kulten[25]

Dwellers in the Depths[26]

Ghorl Nigral[27]

Uralte Schrecken

Chthonic Revelations[28]


This trend was began by H. P. Lovecraft already before the creation of the Cthulhu Mythos. He also encouraged his colleagues (Clark Ashton Smith, Robert E. Howard and others) to utilize his grimoires in their stories and to invent their own. The appearance of references to these forbidden books in the works of many authors lead to readers believing they might be real. Some of the most well known grimoires in the mythos are the Necronomicon (or "Kitab Al-Azif"), Book of Eibon and Unaussprechlichen Kulten.

Sources: Edit

  1. H. P. Lovecraft, "The Hound"
  2. H. P. Lovecraft, "The Dreams in the Witch-House"
  3. H. P. Lovecraft, "Polaris"
  4. H. P. Lovecraft & Hazel Heald, "The Horror in the Museum"
  5. H. P. Lovecraft, "The Doom That Came to Sarnath"
  6. August Derleth, "The House on Curwen Street"
  7. August Derleth, "The Return of Hastur"
  8. Clark Ashton Smith, "The Coming of the White Worm"
  9. Clark Ashton Smith, "The Treader of the Dust"
  10. Robert E. Howard, "The Thing on the Roof"
  11. Robert Bloch, "The Shambler From the Stars"
  12. Ramsey Campbell, "The Inhabitant of the Lake"
  13. Henry Kuttner, "Hydra"
  14. Richard F. Searight, ”The Sealed Casket”, ”The Warder of Knowledge
  15. H. P. Lovecraft & Duane Rimel, "The Tree on the Hill"
  16. Duane Rimel, "The Music of the Stars"
  17. Lin Carter's Xothic Legend Cycle
  18. Brian Lumley, "Cement Surroundings"
  19. Brian Lumley, "The Horror At Oakdeene"
  20. Brian Lumley, ”The Sorcerer's Dream
  21. Robert M. Price, "Lumley as Lovecraft"
  22. Robert M. Price, Ibid.
  23. Robert M. Price, Ibid.
  24. Robert M. Price, Ibid.
  25. Robert M. Price, Ibid.
  26. Robert M. Price, Ibid.
  27. Willis Conover (2002). Lovecraft at Last.
  28. Walter C. DeBill Jr., "The Changeling"

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