The Tinguian: Social, Religious, and Economic Life of a Philippine Tribe by Cole

It seems desirable, at the outset, to set forth certain general conclusions regarding the Tinguian and their neighbors. Probably no pagan tribe of the Philippines has received more frequent notice in literature, or has been the subject of more theories regarding its origin, despite the fact that information concerning it has been exceedingly scanty, and careful observations on the language and physical types have been totally lacking.