Expeditions into the valley of the Amazons, 1539, 1540, 1639
Markham, Clements R. (Clements Robert), Sir, 1830-1916; Vega, Garcilaso de la, 1539-1616; Herrera y Tordesillas, Antonio de, d. 1625; Acuña, Cristóbal de, b. 1597