This microfilm project comprises 23,716 pages of Indian language material. Although the complete Oregon Province Archives collection consists of language selections from some forty-two tribes, only twelve tribes have been filmed. They consist almost exclusively of manuscripts, with the exception of printed material that has been annotated by a Jesuit language expert. The remaining thirty tribes were represented solely by non-annotated printed material and thus fall outside of the scope of this project. The material filmed represents virtually 100 percent of the Oregon Province Archives Indian Language Collection within each tribe. Only non-annotated printed material, incoherent notes and duplications have been excluded.