"The Ibaloi Igorot seventy-five years ago : account of a Spanish expedition to Benguet in the year 1829 : translated from Informe sobre el estado de l...
"The Ibaloi Igorot seventy-five years ago : account of a Spanish expedition to Benguet in the year 1829 : translated from Informe sobre el estado de las islas Filipinas en 1842 (by S. Mas) , Madrid, 1842: Diary of Don G. Galvey, in command of the forces for the suppression of contraband trade": p. 173-178.