While reading the works of my great-grandfather James Churchward, one may be surprised by how closely some of his material resembles that of Augustus Le Plongeon. Actually, their theories were quite dissimilar; LePlongeon placed his cradle of civilization in the Yucatan with the Mayas whereas Churchward wrote it was in the Pacific. On the other hand, James used Le Plongeon's 'Naacal' and quite a few of the references from his books, such as Queen Moo and the Egyptian Sphinx (1896) and Sacred Mysteries Among the Mayas and the Quiches. In my book, Lifting the Veil on the Lost Continent of Mu Motherland of Men, I point to the passages copied from LePlongeon, but reinterpreted by Churchward to fit his narrative.