11 early important biography books, various places and years of print.
* Mavoh Mishnah , Frankfurt 1876.
* Frances B’Yisrael, Yaakov Koppel Tehchen, Toldot Chayav U’Peulotav B’Yisrael , Warsaw 1899.
* Rav Sherirah Gaon , Jaffa 1917.
* Toldot Yaakov , London 1918.
* HaRav Tzvi Hirsch Kalisher , Jerusalem 1928.
* (Two volumes) HaRav Y MZA”H , Tel Aviv 1935.
* MiVolozhin ad Yerushalayim by Rabbi Meir Berlin (Bar Ilan), Tel Aviv 1939.
* Rash”i Mefaresh HaTorah , Jerusalem 1946.
* Rabbi Shmuel Kaufman, Zichronot , Tel Aviv 1955.
* Baruch Spinoza V’Zmano , by Nachum Sokolov, Paris.