The Ernst Pincus Collection contains papers and correspondence of the lawyer Ernst Pincus and his wife Käte (née Zorek). The collection also includes some papers and correspondence of their parents, family members, and friends, along with family photographs and genealogical information.

This collection holds papers of the philosopher Karl Joël and of various members of the Philippson family. Karl Joël's material includes personal and professional correspondence and a considerable amount of his notes, along with newspaper clippings on him and a few articles. Philippson family material largely focuses on Phöbus, Ludwig and Moritz Philippson's family correspondence and writing. Also present are letters of other family members, a few official documents and notes.

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 Herbert Bloch Collection contains the personal papers of the classicist and medievalist Herbert Bloch, a Harvard professor. Prominent is correspondence between himself and his family, which mentions not only family news and the deaths, deportations, and experiences of family members but also references his own research, writing, and teaching. In addition to family correspondence is correspondence with colleagues and friends, former neighbors, and legal and financial correspondence. Other papers in the collection include poetry, educational certificates and diplomas, material relating to Herbert Bloch's academic career, family trees, obituaries, and photographs.

This collection consists of papers of the Loewen family, including Samuel Liepmann Loewen and Liepmann (Leopold) Loewen. It includes personal, business and official papers, correspondence, genealogy, a collection of wax seals, some newspaper clippings, art prints, and a few photographs.

The Salier Family Collection holds papers of members of the Salier family as well as related families, such as the Alexander, Lipmann, and Lehmann families. The collection consists primarily of official, educational, and professional documents of family members, along with a small amount of family correspondence, a few photographs, family writing, newspaper clippings and articles, a cookbook, and a friendship album.