Title: The letter and chart of Toscanelli on the route to the Indies by way of the West
Subtitle: sent in 1474 to the Portuguese Ferman Martins, and later on to Christopher Columbus; a critical study on the authenticity and value of these documents and the sources of the cosmographical ideas of Columbus, followed by the various texts of the letter, with translations, annotations, several facsimiles and also a map
Subjects: Discovery and exploration
Places: America
People: Christopher Columbus, Paolo del Pozzo Toscanelli (1397-1482)