The Franz Boas Papers, Volume 2 explores the development of the ethnography of Salishan-speaking societies on the North American Plateau through the correspondence between Franz Boas and the Scottish-born James Teit, who married into an Interior Salish family and community and became fluent in the Nlaka'pamux language. The letters between Teit (1864-1922) and Boas (1858-1942) chronicle Teit's varied career as an ethnographer from shortly after his initial meeting with Boas in 1894 until Teit's death at the age of fifty-eight. A postscript documents Boas's contribution to Teit's legacy through the posthumous publication of the manuscripts Teit left unfinished at his death. Teit made significant contributions to ethnography and the history of southern British Columbia through his photography of the people with whom he worked, his contributions to ethnomusicology and ethnobotany, his anthologies of mythic narrative, and his collections of Interior Salish--primarily Nlaka'pamux--material culture. In addition to collaborating with Boas in the development of Interior Salish ethnography, between 1909 and 1922 Teit worked to support Indigenous groups in British Columbia who were seeking recognition of Aboriginal title and resolution of their outstanding land claims. The Franz Boas Papers, Volume 2 meticulously tracks the impact of the differing career trajectories of Teit and Boas on the primary product of their collaboration--the initial development of the ethnography of societies speaking Interior Salish languages. This second volume of the Boas Papers is an essential primary source of archival materials for research libraries and for students and scholars of Northwest Coast and interior mountain West ethnohistory, Native American and Indigenous studies, history of anthropology, and modern United States history. It is also an essential source for Indigenous and settler descendant communities.