* إسبانيا هابسبورغ* Spanish Exploration and Conquest of North America* "Spain in America" (Edward Gaylord Bourne, 1904) 'Spain in America'* "The Spanish Borderlands" (Herbert E. Bolton, 1921) 'The Spanish Borderlands'* Indigenous Puerto Rico DNA evidence upsets established history
==External links==* Spanish Exploration and Conquest of North America* "Spain in America" (Edward Gaylord Bourne, 1904) 'Spain in America'* "The Spanish Borderlands" (Herbert E. Bolton, 1921) 'The Spanish Borderlands'* Indigenous Puerto Rico DNA evidence upsets established history