Inca Land: Explorations in the Highlands of Peru

First published in 1922. The author, archaelogist Hiram Bingham, is reputed to be the model for Indiana Jones. According to Wikipedia, "Hiram Bingham, formally Hiram Bingham III, (November 19, 1875 – June 6, 1956) was an academic, explorer, treasure hunter and politician from the United States. He made public the existence of the Quechua citadel of Machu Picchu in 1911 with the guidance of local indigenous farmers. Later, Bingham served as a member of the United States Senate."