This book is offered as a general summary of anthropological research in the New World. It is in the main a by-product of the author's activities as a museum curator in which capacity he has sought to objectify and systematize the essential facts relating to aboriginal America. Thus, he is first of all indebted to the American Museum of Natural History for the opportunities and resources necessary to the development of the subject and for permission to use the experience so gained in the composition of these pages.
Of personal obligations there are many. All of my associates in the Museum have been most helpful: particularly, acknowledgment should be made to Doctor Robert H. Lowie who read the manuscript and offered many suggestions as to the scope and form of the work. In addition, recognition should be given Professor A. L. Kroeber, University of California, for valuable criticisms; to Mr. Leslie Spier for data on the archæology of eastern North America; and to Mr. Andrew T. Wylie, Teachers College, for suggestions as to the form of presentation. Finally, it is a pleasure to acknowledge my obligation to Professor Henry Fairfield Osborn, President of the American Museum of Natural History, for inspiration and encouragement in the earlier stages of the work.
The technical preparation of these pages was undertaken by my secretary, Miss Bella Weitzner, who compiled the tables of linguistic stocks, the bibliography, and the index, and whose long experience, coupled with extensive anthropological knowledge, greatly facilitated all phases of the work. The specimens illustrated are from the Museum collections. The maps, diagrams, and many of the drawings were executed by Mr. S. Ichikawa who also rendered indispensable assistance in the selection and arrangement of the illustrations.