Mary Sutherland is a shaman, researcher and author, who has advocated an Appalacian location for Atlantis over a number of years on her Burlington News website(a). In fact, she claims that the ancient name for Atlantis was Appalacia! She has now published a new book The Red-Haired Giants: Atlantis in America with a foreword by Frank Joseph.
After skimming through a synopsis of the book’s chapters I could only conclude that Sutherland’s Atlantis could not be sunken land that Plato wrote about. There is no doubt that America holds many historical mysteries, but being part of Atlantis is not one of them.
(a) http://burlingtonnews.net/ (offline Dec. 2017)