Center, University of Alaska. Good, Jeff. (2004). "A sketch of Atsugewi phonology." Boston, Massachusetts. (Paper presented at the annual meeting of the Society for the Study of the Indigenous Languages of the Americas, January 8 – January 11). Good, Jeff, Teresa McFarland, and Mary Paster. (2003). "Reconstructing Achumawi and Atsugewi: Proto-Palaihnihan revisited." Atlanta, Georgia. (Paper presented at the annual meeting of the Society for the Study of the Indigenous Languages of the Americas, January 2 – January 5). Kroeber, Alfred L. 1925. Handbook of the Indians of California. Smithsonian Institution, Bureau of American Ethnology, Bulletin No. 78. Mithun, Marianne. (1999). The Languages of Native North America. Cambridge: Cambridge University Press. (hbk); . Nevin, Bruce E. (1991). "Obsolescence in Achumawi: Why Uldall Too?". Papers from the American Indian Languages Conferences, held at the University of California, Santa Cruz, July and August 1991. Occasional Papers on Linguistics 16:97-127. Department of Linguistics, Southern Illinois University at Carbondale. Nevin, Bruce E. (1998). Aspects of Pit River phonology. Ph.D. dissertation, University of Pennsylvania, Department of Linguistics. Nevin, Bruce E. (In review). "Why Proto-Palaihnihan is neither". 10.13140/RG.2.2.33917.20966. Olmsted, David L. (1954). "Achumawi-Atsugewi non-reciprocal intelligibility." International Journal of American Linguistics, 20, 181–184. Olmsted, David L. (1956). "Palaihnihan and Shasta I: Labial stops." Language, 32 (1), 73–77. Olmsted, David L. (1957). "Palaihnihan and Shasta II: Apical stops." Language, 33 (2), 136–138. Olmsted, David L. (1959). "Palaihnihan and Shasta III: Dorsal stops." Language, 35 (4), 637–644. Olmsted, David L. (1964). "A history of Palaihnihan phonology." University of California Publications in Linguistics (Vol. 35). Berkeley: University of California Press. Dictionaries Bauman, James. Ruby Miles, and Ike Leaf. Pit River Teaching Dictionary. Anchorage, AK: National Bilingual Materials Development Center, University of Alaska. Olmsted, D. L. 1966. Achumawi dictionary. Berkeley: University of California Press. External links Bruce Nevin (Achumawi database, texts, and Android app) Bruce Nevin (1998) Aspects of Pit River Phonology Jeff Good, Teresa McFarland & Mary Paster (2003) "Reconstructing Achumawi and Atsugewi" Achumawi language overview at the Survey of California and Other Indian Languages OLAC Resources in and about the Achumawi language Pit River (2022) ('A Treasury of Rare and Unusual Languages' podcast, episode 1). MLX (Minority Language eXperience). Critically endangered languages Pit River tribes Palaihnihan languages Indigenous languages of California Endangered indigenous languages of the Americas