The expedition of Gonzalo Pizarro to the land of cinnamon, A.D. 1539-42 / by Garcilasso Inca de la Vega -- The voyage of Francisco de Orellana down the River of the Amazons, A.D. 1540-41 / by Antonio de Herrera --A new discovery of the great River of the Amazons by Father Cristoval de Acuna -- A list of the principal tribes of the Valley of the Amazons