Brief Description: Personal documents and family correspondence including Zhitlowsky's autobiographical notes. Correspondence with 1040 individuals, mostly prominent Jewish literary, political and social personalities, including: S. An-Ski, Shalom Asch, Baal Makhshoves (Isidor Eliashev), Yitzhak Dov Berkowitz, Hayyim Nahman Bialik, Nathan Birnbaum, Martin Buber, Josef Czernichow, Jacob Dinesohn, Yizhak Grunbaum, Vladimir Jabotinsky, H. Leivick, Abraham Liessin, Judah L. Magnes, Vladimir Medem, Shmuel Niger, Joseph Opatoshu, David Pinsky, Noah Prylucki, Moses Silberfarb, Isaac N. Steinberg, Aron Syngalowski, Nachman Syrkin, Baruch Vladeck, Morris Winchevsky, Jonah B. Wise, Stephen Wise, Lucien Wolf, Yehoash. Also, correspondence with individuals active in Russian and international radical movements at the turn of the century, including Friedrich Adler, Alexander Berkman, Eduard Bernstein, Ekaterina Breshkovskaya, Emma Goldman, Pyotr Lavrov, Georgii Plekhanov, Boris Savinkov, Nikolai Tchaikovsky. Correspondence with organizations, consisting of some 350 correspondents mostly from the United States and Eastern Europe. Included are Yiddishist organizations, American-Jewish institutions, publishers of socialist literature in Europe. Manuscripts of articles, essays and monographs in Yiddish, Russian, English and German by Zhitlowsky, relating to: anarchism; ancient Jewish history; the Talmud; antisemitism; Israel; Zionism; Yiddishism; Jews in Germany, Poland , Russia, the U.S.; nationalism; personalities such as S. An-Ski, Albert Einstein, Simon Dubnow; Hegelian, neo-Kantian and Aristotelian philosophy; socialism, bolshevism, working class issues, marxism, revisionism; Socialist Revolutionary Party in Russia. Manuscripts by other authors including some by S. An- Ski. Speeches to conventions, banquets. Newspaper clippings from *The Day* about Chaim Zhitlowsky. Jubilee materials.