Rabbi Daniel Z. Feldman will give a lecture commemorating the ninth yahrtzeit of his father Rabbi David M. Feldman, this Sunday, March 17 at 7:30 p.m., at Cong. Ohr Saadya, 554 Queen Anne Rd., Teaneck. The lecture will serve as a book launch for his new book, “Letter and Spirit: Evasion, Avoidance, and Workarounds in the Halakhic System.” The lecture is entitled “Rabbinic Responsibility, Community, and Spiritual Integrity.”