Jennifer Coelho-Teeluck is a Canadian researcher who proposed the isthmus of Central America as the location of Atlantis. In a paper presented to the 2008 Atlantis Conference in Athens she equated Plato’s “shoals of mud” with the narrow neck of land where Panama is. She speculates further that a global catastrophe around 10,000 BC led to the destruction of Atlantis and led to the dispersal of survivors north and southward. Elsewhere(a) she links this catastrophe to the theory of Charles Hapgood, which postulates the movement of the outer crust by a number of degrees.
Col. Alexander Pavlovitch Braghine (1878-1942) is well known for his book on Atlantis, which he considers to have been the original homeland of many of the tribes of South America. He attributes the destruction of Atlantis to the consequences of at least one close encounter between Earth and Halley’s Comet, during the Holocene period, on 7th June 4015 BC. He maintains that this intrusion upset the orbits of Earth and Venus causing worldwide destruction. Many of Braghine’s catastrophist ideas are to be found in Immanuel Velikovsky’s later books without any reference to him. Braghine on the other hand was quite willing to acknowledge any use by him of other writer’s work. Some have explained Velikovsky’s omission as being the result of perceived racism on the part of Braghine.
Braghine in his The Shadow of Atlantis mentions a tribe of white-skinned ‘Indians’ called Paria in a region of Venezuela called Atlan. He claims that their legends refer to them having an original homeland beyond the ocean that had been destroyed in a terrible cataclysm. However I have been unable to find any other reference to this tribe apart from that of Frank Joseph who locates it in the Apure region between the Orinoco River and its tributary, the Apure. Braghine’s work was also published in French.*A few years earlier Richard O. Marsh published White Indians of Darien  in which he recounted his meeting with ‘white Indians’ in the remote jungles of Panama. However, claims of encounters with white Indians in Amazonia go back as far as the 16th century(a).When I saw some old photos (b) of these ‘white’ children, I was immediately struck by the fact that many were squinting and were suffering from albinism.*
Sprague de Camp lists a series of errors in Braghine’s book, finishing with the ominous remark that ‘you believe Colonel Braghine at your peril.’
Your compiler found Braghine’s book interesting and informative, although rather dated as it is now seventy years old. I could find no justification for deCamp’s condemnation of Braghine’s work.