Fnthe Rebel Press edition adds paranthetically: "there is, however, a vague account of a secret copy appearing in San Francisco during the present century, but later perished in fire" -- a transparent reference to Clark Ashton Smith's tale The Return of the Sorcerer. Indeed, Lovecraft says in a letter to Richard F. Searight (1935) "This 'history' must be modified in one respect -- since Klarkash-Ton's 'Return of the Sorceror' (pub in Strange Tales 3 yrs. ago) tells of the survival of an Arabic text until modern times."