Josiah Priest (1788-1851) was a well-known American non-fiction writer of the early 19th century. Much of what he wrote is considered pseudo-scientific. Today he is probably best known for his racism and particularly his fundamentalist use of the Bible to justify slavery.
In his 1835 book American Antiquities he refers a number of times to ‘Atalantis’, a spelling variant frequently used at that time. Apart from Plato, Priest also believed that Euclid (fl. c.300 BC) referred to Atlantis when he spoke of the catastrophic separation of Sicily from Italy, Euboea from Boetia “and a number of other islands from the continent of Europe.” Priest clearly considered Atlantis to have been a large island in the Atlantic that provided a stepping-stone to the Americas.
American Antiquities is now available as a free ebook(a).
Casas was convinced of the reality of Atlantis, having being strongly influenced by Marsilio Ficino‘s commentary on Plato’s Atlantis narrative.
He also claimed that Columbus had been inspired by Plato’s story of Atlantis. However, S. P. Kershaw[1410.163] quoting from B. Keen notes that Columbus’ son, Ferdinand ”explicity stated that his father never showed any interest in Plato’s tale.”
Bartolomé himself saw America as Atlantis and in his History of the Indies (Historia de Las Indias) begun in 1527, he drew up a list of parallels to support his contention.