The Philippine Islands, 1493-1898, Volume 29 of 55 Explorations by Early Navigators, Descriptions of the Islands and Their Peoples, Their History and Records of the Catholic Missions, as Related in Contemporaneous Books and Manuscripts, Showing - Bourne, Edward Gaylord, 1860-1908; Blair, Emma Helen, -1911; Robertson, James Alexander, 1873-1939 (Project Gutenberg, 2012)