Topographic map of a part of the province of Ilocos Sur showing the second and third military districts of Tinguianes and Igorrotes, with the legend showing the Christian, Tinguian and Igorrot converts’ towns.
Topographic map of a part of the province of Ilocos Sur showing the second and third military districts of Tinguianes and Igorrotes, with the legend showing the Christian, Tinguian and Igorrot converts’ towns.