Magellan’s voyage Letter from a Spanish spy in Portuguese India to the King of Spain

From Habele Institute

Levesque, Rodrigue (1992). "Magellan's voyage Letter from a Spanish spy in Portuguese India to the King of Spain". History of Micronesia: A Collection of Source Documents. Volume 1, European Discovery, 1521-1560. Gatineau, Quebec: Éditions Lévesque. pp. 284–286. ISBN 0-920201-01-6.

Abstract: A spy’s letter from Portuguese India reporting commercial and naval activity after Magellan’s discoveries. It demonstrates the role of espionage in sustaining maritime rivalry.