K.G. Jayne 
Vasco da Gama and his Successors, 1460–1580 

Vasco da Gama and His Successors (1970) looks at a range of Portuguese explorers of the fifteenth and sixteenth centuries, the most important being Vasco da Gama, whose first voyage to India ushered in a period of European conquest and empire, and established direct and permanent contact between Europe and the Far East.