Author Roy Goodliffe holds a Ph.D. in social and cultural history from the University of Idaho and has taught at Colorado State University, Community College of Denver, Whitman Col...lihat lebih banyakAuthor Roy Goodliffe holds a Ph.D. in social and cultural history from the University of Idaho and has taught at Colorado State University, Community College of Denver, Whitman College, and Regis College. Most of these evocative photographs from the Denver Water Department have never before been published.lihat lebih sedikit