Manuscript of a play by Katz, titled In blut un fayer. Correspondence, 1946-1971. Photographs of J. Katz in Poland in the 1930s, of DP camps. Documents from DP Camps. Clippings from DP camp newspapers.

Correspondence with brothers David and Lippa and other family members, 1907-1964. Correspondence with individuals including Ephraim Auerbach, Menahem Boraisha, Joshua Fishman, Jacob Glatstein, Aaron Glanz-Leieles, Abraham Golomb, Oscar Handlin, David Ignatoff, Zelig Kalmanovitch, Mordechai Kaplan, H. Leivick, Shmuel Niger, Melech Ravitch, A.A. Roback, Jacob Shatzky, Israel Steinbaum, Salomon Suskovich, Abraham Sutzkever, Yokhanan Twersky, Max Weinreich, Aaron Zeitlin. Correspondence with organizations, including the YIVO Institute. Materials relating to YIVO-Yad Vashem Documentary Projects. Manuscripts of poetry, drama, fiction, essays. Translations, speeches and lectures. Miscellaneous pedagogical materials. Materials relating to Camp Boiberik. Research materials such as questionnaires, statistics, correspondence and reports on various topics including reactions to the Eichmann trial. Personal materials. Clippings of articles by and about Lehrer.

Correspondence with literary figures including Leibush Lehrer, H. Leivick, Jacob Lestschinsky, Mani Leib, Shmuel Niger, Abraham Reisen, Lamed Shapiro, Chaim Zhitlowsky. Manuscripts and holographs by H. Leivick, Mani Leib, Abraham Reisen, Chaim Zhitlowsky.

Clippings of Coralnik's articles in Der tog and other publications. Correspondence, manuscripts and typescripts of Coralnik's works. Bibliographic notes. Records of the Koralnik Farlag (Coralnik Publishing).

This collection contains the personal and professional papers of William Edlin, editor of The Day and a prominent Socialist. It includes correspondence with individuals and with organizations, newspaper clippings, manuscripts of works by Edlin and by others as well as translations done by Edlin, and some of Edlin’s personal documents. These materials relate to Edlin’s involvement with The Day, with the Socialist Party, the Workmen’s Circle, various labor and Zionist organizations, literary clubs and activities, and with music, art and drama.

Correspondence with Yitzhak Dov Berkowitz, Alter Druyanov, Simon Dubnow, Jacob Glatstein, Yizhak Grunbaum, Vladimir Jabotinsky, Shmuel Niger, Joseph Opatoshu, Morris Winchevsky. Manuscripts of articles by Rosenfeld and of his doctoral dissertation, Die Philosophie Krochmals als Hegelianer (The Philosophy of Krochmal as Hegelian).

The collection contains the papers of Shalom Schwarzbard (1886-1938), the Russian-born French Jewish watchmaker, revolutionary, writer and activist for Jewish self-defense. In May 1926 in Paris, Schwarzbard assassinated the exiled Ukrainian nationalist leader Simon Petlyura, whom he held responsible for the pogroms against the Jews in the Ukraine in 1918-1921. His trial in October 1927, at which he was acquitted, drew worldwide attention. The collection consists of correspondence, manuscripts of Shalom Schwarzbard's autobiographical writings, personal documents, clippings, and printed ephemera, as well as poems by Schwarzbard's wife Anna and others. Materials in this collection mostly relate to Shalom Schwarzbard's writings, his speaking engagements following his acquittal, and his efforts in the 1930s to organize Jewish war veterans and war victims of the First World War.