The Philippine Islands, 1493-1898 — Volume 28 of 55&#13;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 the Political, Economic, Commercial and Religious Conditions of Those Islands from Their Earliest Relations with European Nations to the Close of the Nineteenth Century by Robertson, James Alexander Blair, Emma Helen Bourne, Edward Gaylord
 is a Project Gutenberg book, now on Github.