In the shadow of the Civil War, a circle of radicals in a rowdy saloon changed American society and helped set Walt Whitman on the path to poetic immortality. Rebel Souls is the first book ever written about the colorful group of artists- regulars at Pfaff's Saloon in Manhattan-rightly considered America's original Bohemians. Besides a young Whitman, the circle included actor Edwin Booth; trailblazing stand-up comic Artemus Ward;...