There are no images as beautiful and haunting as the photographs taken by Edward S. Curtis. Here is a brief background for Curtis, taken from the Edward S. Curtis website provided by Christopher Cardozo Fine Art (no connection to this site):
Morgan Edward Sheriff Curtis not only attempted, but actually achieved the impossible. With The North American Indian he created an irreplaceable photographic and
ethnographic record of more than eighty of North America’s native nations - a record first published between 1907 and 1930, which, after decades of obscurity in rare book rooms and private collections, is now experiencing its renaissance. Comprising twenty volumes, twenty portfolios, thousands of pages of text, and more than twenty two hundred photogravures, The North American Indian remains not only an unparalleled artistic and historic achievement but a watershed in publishing history.

