Start with high-confidence travel in peru books, then narrow by subgenre or adjacent topics.
Turn Right at Machu Picchu
Mark Adams
The Lima Reader
Carlos Aguirre, Charles F. Walker
Machu Picchu Guidebook
Alfredo Valencia Zegarra, Ruth M. Wright
Chile: the Carretera Austral
Hugh Sinclair
Peru - Culture Smart!
John Forrest, Julia Porturas
Ecuador - Culture Smart!
Russell Maddicks
Chile - Culture Smart!
Caterina Perrone
