The Navaho are an Athabascan tribe of nomadic or semi-nomadic habit occupying a reservation in northeast Arizona, northwest New Mexico and southeast Utah. In 1906 they were roughly estimated at 28,500. Sheep raising and weaving are their main industries. In many ways their ceremonial life appears like that of their neighbors, the Pueblo Indians, but the relationship of the two peoples in ceremonialism, as in other respects, has not been studied.