Another purpose of these tomes was to give members of the Lovecraft Circle a means to pay homage to one another. Consequently, Clark Ashton Smith used Lovecraft's "Necronomicon" (his most prominent creation) in Smith's tale "Ubbo-Sathla". Likewise, Lovecraft used Robert E. Howard's "Nameless Cults" in his tale "Out of the Aeons". Thereafter, these texts and others appear in the works of numerous other Mythos authors (some of whom have added their own grimoires to the literary arcana), including August Derleth, Lin Carter, Brian Lumley, Jonathan L. Howard, and Ramsey Campbell.