I initially came across this book due to a Reddit post about the author being a failed child prodigy. My first thought on seeing the table of contents was "damn, this book sounds racist". But it's actually a series of historical accounts in support of Native Americans and their history.
> An origin as a race in some specific place is more probable―most likely, in some region now under the Atlantic Ocean. ... A red-race civilization certainly developed around the north central Atlantic region on both sides of the ocean, and the geographical center of this was in what is now the Sargasso sea, in the middle of the Atlantic ocean, but where tradition on both sides of the ocean places the lost continent of Atlantis.