[5], 461, [3] pages. Monumental work of Rabbi Nosson Zvi Friedman, published by the Agudat Otzar HaRabbanim. Twenty thousand entries reviewing the rabbinate in Jewish hisotory for a thousand years, from 970 to 1970. Includes the names of rabbis, community leaders and chassidic leaders, birthdates, dates of death, personal information , genealogy, community names, and works that they authored. Partially detached spine, stains on the back binding. Fine condition.