I have been working on this project on decentralization and sprawl for some fifteen years. Over the course of those years, I have learned a vast amount from a great many people, some of whom I list below. I apologize for the omissions and the very brief mention of many individuals who spent considerable amounts of their time offering me information and advice, poring over maps with me, driving me around cities, suburbs, and exurbs, and, above all, listening to me try to explain what I was doing. Despite the necessarily terse quality of this list, I am deeply grateful to all.
Among my many guides were Carl Abbot and Gerard Mildner of Portland State and Jim Jacks, a city planner in Tualatin, Oregon, all of whom tried to explain Portland to me; Robin Bachin, Peter Muller, and Greg Castillo of the University of Miami; architect, critic, and historian Aaron Betsky, formerly of Yale University, Los Angeles, San Francisco, and now living in the Netherlands; Christine Boyer of Princeton University; the late Gordon Cherry, a great pioneer in the field of international planning history; British historian Mark Clapson, who helped me understand some of the social dynamics of the English urban landscape; geographer Michael Conzen of the University of Chicago; Wendell Cox, consultant of Belleville, Illinois, whose Demographia Web site provides a model for the display of statistical information; Margaret Crawford, who has been a keen observer of the everyday landscape; Timothy Davis, who helped me understand Texas cities; Timothy Duane of the University of California, Berkeley, who has enlightened me on matters environmental and legal, particularly in relation to the settlements of the Sierra region of California; Alan Ehrenhalt of Governing magazine; Robert Fishman and Edward Dimendberg of the University of Michigan; Marcial Echenique and Andrew Saint of Cambridge University; Nnamdi Elleh of the University of Cincinnati;