Sammy Davis, Jr., as a child, tap danced outside Charlie’s Sandwich Shoppe at night for dimes. Local lore says he lived nearby on Columbus Avenue, but could there be anyone more nomadic than Davis? "We rarely remained in one place more than a week," Sammy Davis, Jr. told a biographer, referring to his childhood as a dancer in the Will Mastin Trio and hard times during the Depression. Another reported that by the time he was 15, Davis had crossed the country twenty-three times. Born in Harlem in 1925, Davis was out on the road with his father and Will...