Primarily serves as the library of the College of Social Sciences and Philosophy. It includes foreign books in the fields of philosophy, religion, history, geography, anthropology, population, sociology, and political science are available here on open shelves and may be borrowed for a period of two weeks by students and staff, one month by faculty. Reserve books, including Filipiniana titles, are on closed shelves and may be borrowed for use within the reading room, or for overnight use upon application.