A “general – private” letter from C”K Admor of Lubavitch OBM, with his signature, with a Halachic elucidation on Chanukah regarding making a blessing when seeing the Chanukah candles in Shul – not printed– sent to the wonderous Gaon and Tzaddik Rabbi Yehuda Zerachia Segal, Rabbi of the Kiryat Shalom neighborhood in Tel Aviv – Kislev, 1972.
Most of the letter’s content (besides for the last four lines) was printed in ‘Likutei Sichos’, vol. 10, p. 294.