"Professor Gustafson has provided an introduction that sparkles with new and interesting information about Spring’s many-sided life."—Arizona and the West  "An impressive addition to the new literature [on the history of Arizona]. . . . Spring acutely observed such things as the social customs of the Apaches and the Mexicans, or the social life of Tubac and Tucson, matters which many other observers, concerned with the outlaw and off-reservation Indian, have ignored."—Pacific Historical Review  "Spring was an acute observer and presents the incidents in an interesting manner. His style is clear and fast-moving. . . . Spring has left a fascinating and enjoyable account of life in the [Arizona] territory.”—Journal of American History