This book is a study in depth of the work of Franz Boas and twenty of his students at Columbia University in the early years of the twentieth century. Collectively they laid the entire institutional as well as the intellectual foundations of American anthropology as it exists today. The book begins with a discussion of the historical context of Boasian anthropology, and an overview of its nature and limitations. The work of Boas and his leading students is then discussed in detail, including biographical data, a review and critique of their research, a review in detail of each of their major publications, and an overall assessment of their contribution to anthropology, as seen in their own time and today.