the Gaon Elijah of Vilna, who lived in the latter part of the 18th century, has there been a rabbinical figure of such unchallenged power over the Orthodox world". Avi Shafran of Agudath Israel of America said: "His pronouncements and his talks when he was active would regularly capture the rapt attention of the entire Orthodox world." A dispute subsequently arose as to whether Yosef Shalom Eliashiv or Aharon Yehuda Leib Shteinman should succeed him. The towns of Bnei Brak and Beitar Illit have streets named after him. Shach was survived by his daughter Devorah, who had nine children with Meir Tzvi Bergman, and his son Ephraim, who rejected the Haredi lifestyle and joined the Religious Zionist movement. Ephraim Shach served in the Israel Defense Forces, received a doctorate in history and philosophy from the Bernard Revel Graduate School of Yeshiva University, and worked as a supervisor for the Israel Ministry of Education. He married Tamara Yarlicht-Kowalsky, and they had two children. He died on October 17, 2011, at the age of 81. Works Avi Ezri – Insights and expositions on various concepts in the Yad HaChazaka of the Rambam Michtavim u'Maamarim – a collection of Shach's letters published in various editions of 4–6 volumes. Further reading Harav Schach: Shehamafteach B'yado by Moshe Horovitz. Keter Publishing House, Jerusalem. 1989. The Man of Vision: The Ultra-Orthodox Ideology of Rabbi Shach (Ish HaHashkafah: HaIdeologia HaHaredit al pi HaRav Shach), by Avishay Ben Haim, Mosaica Publishers Maran Rosh HaYyeshiva Rav Shach – (designed for youth readers) by Rabbi Yechiel Michel Stern. The first comprehensive biographical sketch to appear in Hebrew after the demise of Rabbi Shach – Published by Israel Book Shop Path to Greatness – The Life of Maran Harav Elazar Menachem Man Shach, Vol I: Vaboilnik to Bnei Brak (1899–1953) by Asher Bergman, translated by Yocheved Lavon. Feldheim Publishers 634 pages. References External links Eulogies and articles about Rabbi Shach: (Hebrew) Interview with Dr. Ephraim Shach about his father, Rabbi Elazar Shach Tzava'a of Rabbi Shach (in Hebrew) Text: Shiurim (Hebrew) from Rabbi Shach on various masechtos Chiddushim (Hebrew) from Rabbi Shach on various talmudic topics Speech at the Sixth Knessiah Gedolah of World Agudath Israel in 1980 in Jerusalem Speech at eighth Siyum HaShas in 1982 Speech at Agudah convention in 1982 Videos: Video of Rabbi Shach speaking at Degel Hatorah convention at Binyanei HaUma, and convention at Yad Eliyahu