Candacy Taylor's book, "Overground Railroad," about the Negro Motorist Green Book and the history of African-American travel, will prove provocative and even shocking to some readers -- including the chapter devoted to Route 66. Subtitled "The Green Book and the Roots of Black Travel in America" (Abrams Press, hardcover, 360 pages, 150 illustrations), the years … Continue reading Book review: “Overground Railroad”