She'elot U'Teshuvot Kol Aryeh (3 vol.)

Halachic responsa by Rabbi Avraham Yehuda Hacohen Schwartz (1824-1875). From 1861 to 1881 he served as the Rabbi of Bergszasz, Hungary.
Although Rabbi Schwartz studied in the Pressburg Yeshiva whose leaders were opposed to Hasidism, he became deeply attached to Hasidism after a visit he made to Rabbi Chaim Halberstam, the founder of the Sanz hasidic dynasty.