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papers from his involvement with the American Jewish Congress and Jewish Information Bureau, published and unpublished writings, publications collected by Richards, articles about Richards and his activities, correspondence and articles from testimonial dinners in honor of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.

This collection contains the papers of Ernst Mueller: mathematician, writer, philosopher and librarian. The most prominent material here are his unpublished writings, including autobiographical items such as diaries and memoirs along with essays, articles and drafts of longer works. Major themes of the collection reflect Mueller's interest in Kabbalah and anthroposophy, in addition to a number of works relating to various areas of Jewish studies. Other materials in this collection include correspondence of Ernst Mueller and his wife Frieda, notes, many poems of himself and his brother Edmund, and a few biographical articles and official papers.

The Eugen Kullmann Estate Collection contains documentation of the professional life and personal connections of the philosophy and religion professor and scholar Eugen Kullman. Much of the collection is made up of his correspondence from others, but there are also many notes related to his teaching and research along with professional and official documents. Notes and papers of the philosopher Karl Joël also form a significant portion of this collection. The collection includes notes such as research and lecture notes as well as notebooks; extensive correspondence from others, including family, friends, and colleagues to Eugen Kullmann; and official, professional, and personal documents.

The collection documents the lives of the Fellman and Taranto families of Long Beach, New York, and Washington, D.C., particularly Rosalind Fellman; her father, Sidney Fellman, who was a dentist and the longtime president of the Yom Tov Hebrew Congregation; her mother, Suzanne Taranto Fellman; her grandparents, Harry and Pauline Fellman and Isaac and Alegra Taranto; and her uncles, Milton Fellman and Maurice Taranto. There is also information about the Yom Tov Hebrew Congregation, with which the Taranto family in particular was closely involved.

The collection documents the work of Henry Besso and reflects various aspects of his professional life, personal research and writings in the field of Sephardic culture, Spanish language and linguistics, and Sephardic and Spanish history. Collection also documents Besso's involvement with Sephardic organizations and communities. Collection includes audio materials, brochures, booklets, clippings, conference procedures, correspondence, government publications, minutes, notes, photographs, printed matter, reports, speeches, and writings and translations by Henry Besso and others.

This collection focuses on the professional work of art dealer and Plato scholar Hugo Perls. Among the documents assembled here are an extensive amount of manuscripts, notes on his writing, some correspondence, clippings, photographs and a few manuscripts of the writing of his second wife, Eugénie Söderberg.

Collection consists of correspondence, speeches, photographs, clippings, and memorabilia relating to Crestohl's activities as a lawyer and as a member of the House of Commons in the Parliament of Canada representing Montreal-Cartier, 1950-1963. It includes material relating to Canadian immigration policies, German rearmament, humane slaughtering, and citizen reactions to these issues; correspondence with members of the Israeli Parliament, and correspondence and speeches relating to his numerous activities in communal and Jewish affairs in general and Zionist organizations and The ORT in particular; and personal writings and memoirs in typescript and published material by and about Leon Crestohl.

The collection also contains correspondence in English and Yiddish between members of the Crestohl family, primarily his mother Rose (Weitzman) Crestohl, 1926-1941, and published and manuscript material, both original and copies, relating to the career of his father Hyman Meyer Crestohl, 1904-1921.

This collection documents the work and life of the press photographer Omar Oscar Marcus. The bulk of the records are his personal correspondence with his family and his published articles and pictures. Also included are clippings of his published photographs as well as typed written texts and original photographs, negatives and slides.

The bulk of the collection consists of extensive card bibliographies relating to the personal lives and careers of hundreds of Jewish writers. There are an estimated 300,000 entries in this bibliography. Clippings of biographical articles about Yiddish writers and of literary reviews. Materials (mainly clippings) for a volume on Vilna which Jeshurin edited and published in 1935. Photographs of personalities active in the Workmen's Circle. Correspondence, including Simon Dubnow, Chaim Grade, Mani Leib, Melech Ravitch, Dov Sadan, Abraham Sutzkever, Uriel Weinreich.

The collection contains primarily correspondence, writings, and other documents pertaining to the rabbis Joseph Perles (Perets ben Barukh Asher Perles) and his son, Felix Perles. Also included are writings, correspondence and personal documents from Joseph’s wife, Rosalie Perles, née Schefftel; from Felix’s wife, Hedwig Perles; and from Joseph’s older son, Max Perles.

Almost all of the materials in this collection pertain to the period between the fire of 1917 and the beginning of the German occupation of Salonika in 1941. The materials are arranged and divided into series to reflect both the chronological development and the structure and functioning of a wide cross-section of the Jewish community and its bureaucracy. The materials include metrical records of the Jewish population, most significantly three volumes from the 1917 census of the Jewish community (Series I), records of the Beit Din (Series II), financial records and correspondence of the communal council (Series III and IV), correspondence pertaining to the production and distribution of matzah (Series V), correspondence related to housing and the administration of Jewish neighborhoods (Series VI), records and correspondence of the commission of education (Series VII), records of the Salonika-Palestine company (Series VIII), records of the Banque Union (Series IX), printed materials from Salonika (Series X), and miscellaneous documents and printed materials from World War II on (Series XI).

This collection contains the institutional records of the Sephardic Jewish Brotherhood of America, a fraternal organization founded in New York in 1921 to serve and unify the American Sephardic Jewish community. These records primarily pertain to issues of membership, including mortuary and sick benefits, scholarships and access to charitable funds, as well as information about community receptions and various other cultural activities.