Nowhere was the linguistic diversity of the New World more extreme than in California, where an extraordinary variety of village-dwelling peoples spoke seventy-eight mutually unintelligible languages. This comprehensive illustrated handbook, a major synthesis of more than 150 years of documentation and study, reviews what we now know about California's indigenous languages. Victor Golla outlines the basic structural features of more than two dozen language types, and cites all the major sources, both published and unpublished, for the documentation of these languages--from the earliest vocabula.