“Did Poe himself believe in ghosts? I don’t really know, but somehow I doubt it. He never showed any particular interest in spiritualism, which became extremely popularly during his lifetime. He certainly never wrote about it, though lots of other writers did.” Daniel Cohen, Ghost of Elvis and Other Celebrity Sprits (New York: Pocket Books), page 43 Daniel Cohen argued that Edgar Allan Poe never wrote any real ghost stories.
Perhaps this is the nearest thing he wrote on the subject. He certainly had the power of suggestion.