Long has alluded to the Necronomicon in some things of his—in fact, I think it is rather good fun to have this artificial mythology given an air of verisimilitude by wide citation. I ought, though, to write Mr. O’Neail and disabuse him of the idea that there is a large blind spot in his mythological erudition! Clark Ashton Smith is launching another mock mythology revolving around the black, furry toad-god Tsathoggua, whose name had variant forms amongst the Atlanteans, Lemurians, and Hyperboreans who worshiped him after he emerged from inner Earth (whither he came from Outer Space, with Saturn as a stepping-stone). I am using Tsathoggua in several tales of my own and of revision-clients—although Wright rejected the Smith tale in which he originally appeared. It would be amusing to identify your Kathulos with my Cthulhu—indeed, I may so adopt him in some future black allusion.
DESCRIPTION: In a letter to fellow writer Robert E. Howard, Lovecraft discusses the expansion of his imaginary mythology, now known as the Cthulhu Mythos.
CITATION: Lovecraft, H. P. “To Robert E. Howard.” 14 Aug. 1930. Lord of a Visible World: An Autobiography in Letters. Edited by S. T. Joshi and David E. Schultz, Ohio University Press, 2000, pp. 207-8.