PCT4263860: Medicine Crow, Apsaroke. The falcon tied to its head is a way of carrying the symbol of its guardian spirit. Photo taken from volume 4 of the encyclopedia published by Edward S. Curtis (1868-1952) on the Indians of North America, with a foreword by Theodore Roosevelt. Between 1907 and 1930, 20 volumes were published. ©Gusman/Leemage, Curtis, Edward Sheriff (1868-1952) / Bridgeman Images