[Verginius Rufus]

Charles C. Mann's book 1491 has some interesting material on lost civilizations of pre-Columbian Bolivia, only rediscovered in the last few decades.

[gleeaikin]

Don’t forget to check out writings of Gloria Farley about the many traces of Europeans in North America dating back as far as 4,000 years ago. Probably the same in the Amazon, explaining the tall, pale, civilized people.