The "Book of Eibon", or "Liber Ivonis" or "Livre d'Eibon", is attributed to Clark Ashton Smith and can be said to be his equivalent of Lovecraft's "Necronomicon". It appears in a number of Lovecraft's stories, such as "The Haunter of the Dark" ("Liber Ivonis"), "The Dreams in the Witch House" ("Book of Eibon"),"The Horror in the Museum" ("Book of Eibon"), "The Shadow Out of Time" ("Book of Eibon") and "The Man of Stone", a collaboration with Hazel Heald ("Book of Eibon").