Books Works on Vasco da Gama
A journal of the first voyage of Vasco da Gama, 1497-1499 (1898)
https://archive.org/download/worksissuedbyha00unkngoog/worksissuedbyha00unkngoog.pdf
Vasco Da Gama and his successors, 1460-1580 (1910)
https://archive.org/download/vascodagamahissu00jaynuoft/vascodagamahissu00jaynuoft.pdf
The three voyages of Vasco de Gama (1868)
https://archive.org/download/voyageroundworld01tayl/voyageroundworld01tayl.pdf