For twenty-five years, Rabbi Tovia Halberstam, a scion of leading Chassidic dynasties, told riveting Chassidic tales to an audience of thousands on the Yiddish radio in New York. These legends, as precious and rich as family heirlooms, were known to millions of Jews before the Holocaust. Preserved today in their original Yiddish by the Chassidic community, the tales capture a vibrant culture with animated characters, humor, wisdom, human struggle,...