This series consists of photographs related to the Indigenous group called the “Itneg” people, but which were referred to by Dean Worcester by the exonym “Tinguians.” The photographs in this series were obtained in the Provinces of Abra (Baac, Bangued, Bol-lilising, Manobo, Padangitan, Danglas, Lamao, Baco, Lingay, San Andreas, Daguioman, Tui, Sallapadan, Balatoc, and Langidan), Ilocos Sur (Abaya, Mckinley, San Vicente, and Elefante), and Bontoc (Balbalasang). For further information on this series consult Index to Philippine photographs (Ayer 290 .A983 1905).