This collection contains materials collected by David Trotsky relating to the Jewish community of Belgium in the inter-war period. Materials include printed documents, posters, reports, meeting minutes, and newspaper clippings, mainly pertaining to the Jews of Brussels and Antwerp.

The Lithuanian Jewish Communities Collection is comprised of documents relating to Jewish cultural, religious, social, political, and economic life in approximately 150 towns in Lithuania. The bulk of the collection pertains to the period between 1919 and 1926, when elements of a system of Jewish national autonomy existed within the Lithuanian state, including a Ministry of Jewish Affairs and governmentally empowered Jewish community councils. Smaller parts of the collection relate to the periods before (1860-1918) and after (1927-1940) the autonomy.

This collection contains the personal and professional papers of rabbi, Hebrew scholar, author, and editor Israel Elfenbein. These materials include correspondence with and relating to congregations, Hebrew periodicals, organizations, Elfenbein’s writings, personal correspondence, sermons, clippings, and manuscripts by Elfenbein and by other writers.

This collection contains documents of journalist and left-wing political activist Paul Novick, consisting mainly of correspondence, subject files, manuscripts, photographs, and newspaper clippings. These materials relate to Novick’s career as long-time editor of the Morning Freiheit (Morning Freedom), his important role in the worldwide Communist movement, the history of the Freiheit itself, and Jewish and general politics. These materials demonstrate Novick’s important, and changing, role in the history of Communism, as well as his career as a Yiddish journalist and author.

This collection consists of general reference files from the New York City headquarters of the American Jewish Committee (AJC). Materials originated in various AJC departments and were maintained by a Central Records office until 1962, when records retention policy was decentralized. Document types include correspondence, memoranda, reports, clippings, and published materials concerning individuals, businesses, government agencies, and other organizations related to the work of the AJC.

The collection represents the papers of Morris David Waldman (1879-1963), a rabbi, social worker and communal leader, who was appointed executive secretary of one of the main Jewish defense organizations, the American Jewish Committee (AJC), in 1928. The executive secretary had top executive function at the organization and was in charge of working out and implementing the organization’s projects and policies regarding monitoring the civil and human rights of the Jews, and intervening on behalf of the Jews both in the U.S. and abroad. In 1942, Waldman was promoted to executive vice-president, a position he held until his retirement in 1945. The Morris Waldman Files relate to all of Waldman's activities as acting executive secretary and vice-president of the AJC.

This collection contains the records of the Union of Jewish Student Associations in Germany (Yiddish: Farband fun di Yidishe Studentn Fareynen in Daytshland; German: Verband Jüdischer Studentenvereine in Deutschland), an umbrella organization of associations of East European Jewish students who were pursuing their education in cities throughout Germany in the 1920s. Along with the Union's records are the records of two of its affiliate associations, the Jewish Student Association in Berlin and the Jewish Student Association in Jena. The student associations and the umbrella organization that they founded aimed to further Jewish cultural life among members; to provide material assistance to members in need; and to advocate for the interests of members vis-à-vis state and academic authorities. Included are administrative records such as bylaws, minutes, and announcements; materials documenting membership meetings of the Berlin association and conferences of the umbrella organization; petitions and correspondence from members concerning financial aid; materials documenting libraries maintained by the students, and other activities; and general correspondence. Among the correspondents are Jewish charitable and social-welfare organizations that contributed to the support of East European Jewish students through the student associations, including the Yidishe Velt-Hilfs-Konferents (Conférence Universelle Juive de Secours, Paris), the Verband der Russischen Juden, the Hilfsverein der Deutschen Juden, and the Zentralwohlfahrtsstelle der Deutschen Juden, as well as the Jewish Community of Berlin, and Jewish communities in other cities in Germany. The collection also includes a relatively small amount of materials of mixed provenance documenting the activities of other associations and umbrella organizations of East European Jewish students, both in Eastern Europe and the West, the greatest portion related to interwar Poland, especially Vilna.

This collection consists of materials relating to Jewish life in countries around the world from 1778-1957. Topics include cultural and educational organizations, political parties and elections, charitable institutions, labor, and religious life.

The Vilna Collection represents fragmentary materials that were part of the original YIVO Archives in Vilna before WWII. The collection includes a wide array of materials dealing with a great variety of aspects of Jewish life in the Pre-revolutionary Russian Empire and post-revolutionary Poland, Ukraine, Lithuania, and Soviet Russia. The Collection consists of personal correspondence, official correspondence with organizations and governmental institutions, financial and statistical reports, minutes of meetings of Jewish communal and political organizations, bibliographic materials, including card catalogues and bibliographies. Also included here are vital documents, such as birth certificates and birth registers, affidavits, certificates, diplomas, and travel documents. Additionally, there are petitions, resolutions, appeals, printed materials, manuscripts, lists, and questionnaires. There is a wealth of materials dealing with Jewish book trade and publishing, youth and sports organizations, education, Jewish communal life, and political activities.