Jungle of Stone: The Extraordinary Journey of John L. Stephens and Frederick Catherwood, and the Discovery of the Lost Civilization of the Maya by William Carlsen
A Splendid Savage: The Restless Life of Frederick Russell Burnham by Steve Kemper
Gods, Graves & Scholars: The Story of Archaeology by C.W. Ceram
Investigate or ignore, it's up to the reader.
Also, now in paperback:
Barbarian Days: A Surfing Life by William Finnegan [It won the Pulitzer for autobiography last year.]