These papers include materials on the Onondaga, Tuscarora, Seneca, Cayuga, and Oneida Indians, collected during the years 1928-1930 under the auspices of the American Council of Learned Societies' Committee on Native American Languages. Included are field notes, grammars, dictionaries, studies of Handsome Lake religion, medical prescriptions, comparative linguistics, and correspondence with Franz Boas. Contains data on consultants, texts, translations, paradigms, grammatical studies, and lexical files.