A clearly-delivered 30-minute video lecture on the influence of the myth of Atlantis on R.E. Howard, by pulp history scholar Jeff Shanks. Including discussion of the Atlantis fringe authors, who Lovecraft eventually got around to reading circa the mid to late 1920s.
Lovecraft had of course written an early Atlantis story in “The Temple” (1920), in which the Prussian narrator suggests the sunken city was the forerunner of Ancient Greece.
He commented to Clark Ashton Smith in June 1926 about his reading of The Story of Atlantis (1896)…
[he writes that he is undertaking new reading] of vast interest as background or source material — which has belatedly introduced me to a cycle of myth as developed by modern occultists and sophical charlatans … I only wish I could get hold of more of the stuff. What I have read is The Story of Atlantis … by W. Scott Elliott.
He then attempted the germ of an Atlantis-meets-Roman Britain story in his fragment “The Descendant” (c.1927)…
Gabinius had, the rumour ran, come upon a cliffside cavern where strange folk met together and made the Elder Sign in the dark; strange folk whom the Britons knew not save in fear, and who were the last to survive from a great land in the west that had sunk, leaving only the islands with the raths and circles and shrines of which Stonehenge was the greatest.
But this would have rather improbably placed Atlantis somewhere just off his beloved ancestral Cornwall and Devon. One suspects that even Lovecraft balked at the task of turning the homely Isles of Scilly into the evil-haunted remnant mountain-tops of a sunken Atlantis.