In 1842, Victorian England's foremost novelist visited America, naively expecting both a return to Eden and an ideal republic that would demonstrate progress as a natural law. Instead, Charles Dickens suffered a traumatic disappointment that darkened his vision of society and human nature for the remainder of his career. His second tour, in 1867-68, ostensibly more successful, proved no antidote for the first. Using new materials-letters, diaries,...