This collection contains documents relating to the "Aryanization" in 1935 of factory "Simson Werke" in Suhl (Thuringia), which was owned by Arthur Simson (1882-1969) and Julius Simson (1884-1953). It also includes materials about Julius Simson and the Simson family.

This collection centers on the literary work of the physician Julius Walter Levi. He was born in Munich in 1891. In 1937 he immigrated with his family to New York, where he opened his own practice. In addition to his medical career, Julius Walter Levi wrote prolifically poetry and novels as well as plays, essays and short stories. Another section of the collection contains the drafts and the actual manuscript of his memoirs.

This collection primarily documents the efforts of Justin Mueller, his mother Laura (née Zivi) Mueller, and the extended Zivi family to leave Muellheim (Baden), Germany in the late 1930s and early 1940s. Also included are genealogical research on the Zivi family, materials about the family of Justin Mueller's wife, Hella Rees Mueller, and items of general German-Jewish interest donated by Mueller.

This collection encompasses papers of members of the extended Rindskopf family, including Lori Berliner. Documentation of the family history, significant events such as marriages and deaths, and their interrelation through correspondence is present. The collection holds official documents, correspondence, genealogical material and celebratory poems, among other material.

The Kafka-Goldschmied Family Collection includes theater programs and clippings of opera productions, starring the Viennese opera singer Frieda Kafka Bauer. Also included here is correspondence from Joseph and Maria Jung to their aunt, Eugenie Goldschmied, née Kafka, poems by Fred Bloch, and thank you letters and invitations.

The Kalischer Family Collection contains genealogical research and a few family papers. Included in the collection are genealogical tables, related articles, a small amount of correspondence, and photographs.

The Kallir Family Collection contains birth certificates, death notices, correspondence, and documents certifying the achievements of those in the Kallir Family.

The file contains various documents pertaining to Joseph Walk's research on Karl Gustav Kindermann and his relations with the Nazi and Japanese regimes during World War II. The file comprises three folders.

This collection holds material relating to Karl Rosenthal, rabbi of the Berlin Reform Congregation and Temple of Israel in Wilmington, North Carolina. Items in this collection center on his life, especially his time as rabbi in Berlin, as well as on the life of his wife. In addition to biographical material, the collection also holds Karl Rosenthal's writings, such as sermons and published articles. There are also two tapes of a lengthy interview with Trudie Rosenthal that describe the Rosenthals' life in Germany.

Various items pertaining to Karl Wolfskehl.

This collection documents the history and some of the activities of the Kartell-Convent deutscher Studenten jüdischen Glaubens and its American successor organizations. Among the records are financial papers, organizational correspondence, published and unpublished essays and articles, photographs, autograph books, meeting minutes and reports and publications.

This collection documents the life and work of the law librarian Kate Wallach. Contained in this collection are papers relating to her personal life, mainly her correspondence between her and her parents and her brother when she was already in the United States, as well as official documents and professional correspondence between her as a law librarian and members of other academic libraries. Kate Wallach was among the first 150 women to practice law in the state of Wisconsin.

The Kaulla Family Collection holds materials on Kaulla genealogy along with some family papers and articles on the family. It includes family trees, articles, clippings, correspondence, manuscripts and notes.

The collection consists of documents, photographs, clippings, ephemera pertaining to three generations of the Kroner family from Berlin, Germany.

This collection mainly consists of documents pertaining to the conductor Kurt Adler. Primarily there are documents about his life and his professional career, but there are also documents concerning the restitution of lost property of his parents.

The Kurt Hirschfeld Correspondence Collection largely contains correspondence sent to theater director Kurt Hirschfeld by authors and dramatists as well as personal acquaintances. Much of the collection centers around the production of theatrical works as well as news of his correspondents, among whom numbered well-known German-language dramatists and authors. A few letters of Hirschfeld's as well as letters to his wife following his death are also included, as are some unpublished manuscripts of poems and essays of his correspondents.

The bulk of the collection consists of microfilmed copies of articles pertaining to aspects of the Georg Kareski affair. All articles carry comments by Kurt Ball-Kaduri. Originals are at the Yad Vashem archives.

The Kurt Riezler Letters hold the correspondence of the diplomat Kurt Riezler with his fiancée Kaethe Liebermann as well as a few letters with other individuals, most notably her father, the painter Max Liebermann. Prominent in the correspondence is the discussion of the first months of World War I and the conditions in Moscow in 1918. Later letters consist of conversations with other family members.

The collection deals with the lives of members of the Rosenfeld family, most prominently Kurt Rosenfeld. It includes newspaper clippings, official documents, notes, and biographical sources which provide information on the private lives of individual family members, their possessions before the war, and their professional and political careers.

This collection documents the personal life and professional career of art director, editor, and photographer Kurt Safranski (1890-1964), who co-founded the photo agency Black Star in 1935. The collection also includes information about the career and life of Kurt’s daughter, Tina Fredericks-Koch, née Safranski (1922-2015), who worked as an art director for magazines and in real estate.

This collection documents the life and work of Kurt Schwerin. Kurt Schwerin immigrated to the United States in 1938 where he became a librarian and professor of law. Contained are several of his writings, research notes and other papers mainly related to his attempts to organize the immigration of his family, to settle down in the United States and regarding to his function as board member and head of the Chicago Chapter of the Leo Baeck Institute.

Collection contains materials generated while Label Katz served in leadership positions with B’nai B’rith from the 1950s through the 1960s; best represented is his tenure as president of B’nai B’rith International between 1959 and 1965, during which Katz concentrated on challenges faced by Soviet Jews, and on the improvement of Jewish education. Materials consist of correspondence, speeches, clippings, photographs, minutes and reports.

The Landau Family Collection holds documents pertaining to the restitution claims for the estate of Marianne Landau, including their property located at Pariser Platz 6a in Berlin. The correspondence in the collection details the efforts, sought out by the heirs of the Landau family, to receive compensation for a number of assets lost during the Nazi's reign and World War II. Also included are photographs, as well as legal, financial, and genealogical documents relating to specific members of the family.

The collection contains various letters, certificates, photographs, and printed materials relating to the families of Carl Heinz Gans and Ruth Landsberger.

This collection contains correspondence, documents, and newspaper clippings relating to the life and activities of Frankel in the Metropolitan Life Insurance Company, as well as in other social welfare Jewish organizations. Includes biographic and bibliographic data; manuscript and printed copies of his writings; speeches on the subjects of health, insurance and Jewish affairs; and miscellaneous personal correspondence, particularly especially with Milton Rosenau.

The Lee Sommer Collection primarily consists of photographic material of the Lee Sommer family. In addition it contains a small amount of family correspondence, memorial albums, and articles about Hermann Schuelein.

This collection contains the personal papers of members of the Leiter and Berliner families of Hamburg and Berlin. Some members of these families immigrated to the United States in the late 1930s while others survived World War II in Amsterdam, as forced laborers in Berlin, or in Theresienstadt. Materials include vital documents, official papers, personal correspondence, poems, clippings, official announcements and orders, banking records, restitution materials, and a few photographs.

The Leo Baeck Collection documents the life and work of Rabbi Leo Baeck, well-known as a leader, scholar, and spokesman for German Jewry. Although the most prominent items in this collection are articles, clippings, and biographical material on Leo Baeck, the collection also holds original manuscripts of his writing, as well as personal documents, correspondence, and a small amount of photographs and artwork.

The Leo Baeck Family Collection documents the lives and influential events of members of the Baeck and Berlak families, specifically Leo Baeck, Ruth and Hermann Berlak, and Marianne and A. Stanley Dreyfus. Most prominent is the documentation on Leo Baeck's life; other salient themes include the World War I experience of Hermann Berlak and the Dreyfuses' involvement in preserving the memory of Leo Baeck's life and teachings. The collection includes extensive correspondence; a large accumulation of articles, especially those focused on Leo Baeck; a smaller amount of personal papers, manuscripts, drafts and notes; and a few photographs and slides.

Series V of the Leo Baeck Institute Institutional Archives consists of clippings, photographs, A/V materials, and a few other original documents that have been assembled at LBI New York, 1955-1997.