This collection documents the life of pharmacist and entrepreneur Arthur Abelmann. It contains materials about his personal and professional life, including his service in World War I. The bulk of the material concerns Chemiewerk, the pharmaceutical firm he founded in 1920 and cultivated for 13 years. In 1933, Abelmann was forced to resign his leading position and then to sell the company in one of the earliest cases of "Aryanization."

The collection contains Bernard G. Richards personal and official correspondence, papers from his involvement with the American Jewish Congress and Jewish Information Bureau, published and unpublished writings, publications collected by Richards, articles about Richards and his activities, correspondence and articles from testimonial dinners in honor of Richards, and photographs. Significant correspondents include Joseph Barondess, Louis D. Brandeis, Vladimir Jabotinsky, J.L. Magnes, Louis Marshall, Franklin D. Roosevelt, Jacob H. Schiff, Philip Slomovitz, Arthur Hays Sulzberger, Morris Winchovsky, and Stephen S. Wise.

The Clara Michelson Collection documents the life and work of the writer and graphologist Clara Michelson. The main subjects of the collection are her writings and her publications. The collection consists of manuscripts, a list of manuscripts, correspondence, publications and a photograph.

The collection contains documentation of the Erna Weingold Kleinermann family, including vital records, identity cards and passports, school certificates, and correspondence.

The collection contains play manuscripts, programs, playbills, posters, photographs, correspondence, agreements, scrapbooks, clippings, printed ephemera, and memorabilia relating to Yiddish theater primarily in the early twentieth century, especially the interwar period. Also included are items of printed ephemera related to Yiddish film, Hebrew theater, and a broad range of Jewish performers, including cantors, singers and dancers. Geographically, the materials originate predominantly in Poland and other parts of Eastern Europe, including parts of the Russian Empire and, later, the Soviet Union; and, to a lesser extent, the United States, especially New York City. Also included are materials from Western Europe, Palestine (Eretz Israel), South America, and other regions around the world. Among the theater personalities represented in the collection with significant amounts of material are Herz Grossbard, David Herman, Joseph Winogradoff, Rudolf Zaslavsky, Zygmunt Turkow, Jonas Turkow, Moyshe Lipman, Ida Kaminska, and Esther Rachel Kaminska. The theater groups best represented include the Varshever Yidisher Kunst-Teater (VYKT; Warsaw Yiddish Art Theater), founded by Zygmunt Turkow and Ida Kaminska; the Vilna Troupe; Yung Teater / Nay Teater (Warsaw; Vilna), under the direction of Michael Weichert; the Moscow State Yiddish Theater (known by its Russian acronym "GOSET"); Maurice Schwartz's Yiddish Art Theatre, of New York; and the Hebrew theater "Habimah." A wide variety of other professional as well as amateur theater groups are represented with smaller amounts of material.

This collection documents the academic, professional and private life of Jacob Barosin (1906-2001), a painter and artist of Russian-Jewish descent. Barosin was raised in Berlin, but he fled to France in 1933 and in 1943 survived a stint in the Gurs concentration camp. The collection primarily contains correspondence, ephemera, manuscripts, official documents, personal papers, and photographs.

Joseph Roth was one of the most prominent Austrian writers of the first half of the 20th century. Particularly his novels and newspaper essays gained him the respect of contemporary critics. Joseph Roth's papers at the Leo Baeck Institute Archives consist of handwritten and typewritten manuscripts of novels, novellas, short stories, and essays, including mostly complete manuscripts of his works Die Hundert Tage (The Ballad of the Hundred Days), Büste des Kaisers (The Bust of the Emperor), and his 'Trozki' novel Der stumme Prophet (The Silent Prophet). Joseph Roth's journalistic work is also well represented. There are a few personal items and over one hundred photographs of Joseph Roth and his wife Friederike. The Joseph Roth collection also contains correspondence with family and publishers, clippings about Joseph Roth, and reviews of his work. The addenda mostly consist of invitations to conferences and exhibitions, and scholarly articles on Joseph Roth's work and life.

The Marianne Salinger Collection comprises a broad variety of personal and professional documents pertaining to Marianne Salinger and her family. Spanning four generations, the material is clustered around individual stories of several family members and their relationships, each illustrated by different document types and genres, including personal and official letters, diaries, clippings, photographs and slides, various certificates, advertisements, restitution papers, as well as a couple of annotated books of various genres such as children's books, one cookbook, one autobiography and a language textbook. Some translations are included.

Mizrakh Yidisher Historisher Arkhiv Collection consists of diverse materials that pertain to pogroms in the period between 1918 and 1921 that took place mostly in Ukraine but also in Belarus, Poland, and Russia. There is a wide variety of topics that are covered in the collection including Ukrainian-Jewish relations during a short lived Ukrainian Republic, Ukrainian-Jewish political, communal, and governmental organizations, Ukrainian government and the role of politicians and military Commanders in pogroms, most notably Symon Petlyura and Ataman Grigoriev, pogroms and its aftermath, military occupation of Ukraine by the German, Polish, Bolshevik and General Denikin’s armies and its relationship to pogroms, Jewish self-defense and relief work. Also included here are materials pertaining to the trial of Sholom Schwarzbard who was tried in France for assassination of Symon Petlyura. The collection consists of of large amount of lists and eyewitness testimonies, correspondence, complaints and petitions, reports and resolutions, statements and proclamations, memoranda and circular letters, conference materials, statues and by-laws, clippings and bulletins, military orders, and photographs.

The Nadelmann and Wolff Families Collection provides documentation about members of the Nadelmann, Wolff, Lewinsohn, and Kann families, including details on their professions, early lives, the towns from which family members derived, and including details on the emigration and deportation of family members. The collection consists of family correspondence, photographs, genealogical research, and research on family members' hometowns.

This collection consists of photographs and negatives of World ORT conferences and congresses, various individuals connected with ORT, and ORT vocational programs and activities, including in Displaced Person’s camps, in Europe, Asia, the Middle East, Africa, Cuba, and North and South America.

This collection contains manuscripts of some of the earliest Yiddish plays, correspondence between playwright, poet, and director Abraham Goldfaden, the father of Yiddish theater, and various actors and writers, as well as some family correspondence, newspaper clippings on Goldfaden and his impact on Yiddish theater, articles by Goldfaden on a variety of topics, and various other theater materials, such as title pages of plays, programs and song sheets. The collection illustrates Goldfaden’s great and ongoing influence on Yiddish theater.

This collection contains documents relating to David Pinski’s role as a Yiddish writer, playwright, essayist, translator, editor, literary critic, and author of novels, plays, short stories, essays, and poems. There is personal and professional correspondence, manuscripts of novels, plays, poems, essays, and articles, translations of Pinski’s works into English and Russian, lectures made on various occasions, personal documents and photographs, programs, notes, and newspaper clippings. These materials demonstrate Pinski’s important role in Yiddish drama and literature, Jewish community life and Yiddish cultural institutions.