The 48 maps and descriptive narratives in this atlas of the Navajo Reservation are divided into six sections. Part I, Navajo Country, displays Navajo land in relationship to the United States and the region, and becomes more detailed to place locations within the Dine Bikeyah, or Navajo Land, including administrative and political subdivisions of the reservation. Part II, The Physical Environment, shows the landforms and geology of the area, climates, vegetation, soils, the pattern of streams, and various aspects of ground water. Part III, Navajo History, describes the evidence of prehistoric Navajo inhabitation of the area, early Navajo migrations, and the evolution of the Navajo Reservation. Part IV, Navajo Population, contains maps showing rural dwellings and population density, and graphs depicting structure of the Navajo population by age and sex. Part V, Livelihood, Resources, and Services, shows livestock and grazing, employment on the reservation, mineral resources, energy development, electric transmission lines, pipelines, railroads, tribal utilities, irrigation, medical facilities, banks, educational facilities, parks and sacred places. The section on educational facilities gives a brief history of education on the reservation from boarding schools, BIA schools, and mission schools to institutions of higher education. Part VI, The Disputed Navajo-Hopi Lands, traces the origins of a land dispute between the two tribes that resulted in a partition of a joint use area into areas exclusively for each tribe. Most maps detail information on Hopi land as well, since it is surrounded by the Navajo Reservation. The atlas also contains graphs, photographs, selected references, and an index. (KS)