The nineteenth-century eccentric Ida C. Craddock was by turns a secular freethinker, a religious visionary, a civil-liberties advocate, and a resolute defender of belly-dancing. Arrested and tried repeatedly on obscenity charges, she was deemed a danger to public morality for her candor about sexuality. By the end of her life Craddock, the nemesis of the notorious vice crusader Anthony Comstock, had become a favorite of free-speech defenders and women's...