Most Popular Books
- In the Wilds of South America; six Years of Exploration in Columbia, Venezuela, British Guiana, Peru, Bolivia, Argentina, Paraguay, and Brazil
- The Black Phantom
- In The Wilds Of South America: Six Years Of Exploration In Columbia, Venezuela, British Guiana, Peru, Bolivia, Argentina, Paraguay, And Brazil
- The Hidden People: The Story of a Search for Incan Treasure
- The Hidden People: The Story of a Search for Incan Treasure
