The task of recording the descriptive material embodied in these volumes, and of preparing the photographs which accompany them, had its inception in 1898. Since that time, during each year, months of arduous labor have been spent in accumulating the data necessary to form a comprehensive and permanent record of all the important tribes of the United States and Alaska that still retain to a considerable degree their primitive customs and traditions. The value of such a work, in great measure, will lie in the breadth of its treatment, in its wealth of illustration, and in the fact that it represents the result of personal study of a people who are rapidly losing the traces of their aboriginal character and who are destined ultimately to become assimilated with the "superior race." It has been the aim to picture all features of the Indian life and environment—types of the young and the old, with their habitations, industries, ceremonies, games, and everyday customs. Rather than being designed for mere embellishment, the photographs are each an illustration of an Indian character or of some vital phase in his existence. Yet the fact that the Indian and his surroundings lend themselves to artistic treatment has not been lost sight of, for in his country one may treat limitless subjects of an æsthetic character without in any way doing injustice to scientific accuracy or neglecting the homelier phases of aboriginal life. Indeed, in a work of this sort, to overlook those marvellous touches that Nature has given to the Indian country, and for the origin of which the native ever has a wonder-tale to relate, would be to neglect a most important chapter in the story of an environment that made the Indian much of what he is. Therefore, being directly from Nature, the accompanying pictures show what actually exists or has recently existed (for many of the subjects have already passed forever), not what the artist in his studio may presume the Indian and his surroundings to be. The task has not been an easy one, for although lightened at times by the readiness of the Indians to impart their knowledge, it more often required days and weeks of patient endeavor before my assistants and I succeeded in overcoming the deep-rooted superstition, conservatism, and secretiveness so characteristic of primitive people, who are ever loath to afford a glimpse of their inner life to those who are not of their own. Once the confidence of the Indians gained, the way led gradually through the difficulties, but long and serious study was necessary before knowledge of the esoteric rites and ceremonies could be gleaned.