This Second Edition, updated from the 1980 census, reflects the new county boundaries, the continuing Hopi-Navajo land dispute, the changes in Indian populations and congressional districts, the growth in population in Arizona’s counties and cities, and the decline of the copper mining industry. An addition to the Bibliography lists new books about Arizona and its history.
Henry Pickering Walker (1911–1984), a well-known historian of the American West, was the author of The Wagonmasters: High Plains Freighting from the Earliest Days of the Santa Fe Trail to 1880 and coauthor of Historical Atlas of Arizona, also published by the University of Oklahoma Press.