Papers of H. Otley Beyer including correspondence, programs, photographs, maps, notebooks, articles, drafts of books, printed materials, theses, undergraduate students' work, conference papers, newspaper cuttings, charts, genealogies and other papers. Also includes bound volumes containing original source material on archaeology, ethnography, languages, history, culture and religion of ethnic groups in the Philippines including the Ifugao, Bantok, Igorot, Moro and Iloko. Most, but not all volumes were written or compiled by Beyer.