The archives of the Spanish Archive of the Indies are a century older than that, and if the Portuguese Casa da Índia hadn't been destroyed in the great 1755 ear

The archives of the Spanish Archive of the Indies are a century older than that, and if the Portuguese Casa da Índia hadn't been destroyed in the great 1755 earthquake we'd have sailing records from the dawn of the Age of Discoveries. The records and maps were national secrets, and for good reason. You do wonder if the NSA will declassify its records 100 years from now.