 In 1609, he published the work for which he is now remembered – "Sucesos de las Islas Filipinas" ("Events in the Philippine Isles").This work, perhaps the best account of Spanish colonialism in the Philippines written during that period, is based partly on documentary research, partly on keen observation, and partly on Morga's personal involvement and knowledge.The history was published in two volumes, both in 1609 by Casa de Geronymo Balli, in Mexico City.