The collection contains correspondence among members of the Ehrenberg and Rosenzweig families, including let-ters from Franz Rosenzweig, Adam Rosenzweig, Philipp and Richard Ehrenberg, as well as with other parties, including Rudolph von Jhering, Betty Mauthner, Claire von Gluemer, Jacob Freudenthal and, in copies only, Leopold and Adelheid Zunz and Heinrich Heine. Also included are engagement contracts, marriage banns, school curricula and certificates, character refer-ences, eulogies, family histories, and other documents concerning family members. This material also reflects much of the history of the Samsonschule in Wolfenbuettel of which members of the Ehrenberg family were principals.

The Ernst Traugott Rosenzweig Collection contains personal papers, correspondence, a small amount of photographs, and a Hebrew Purim megillah scroll.

This collection mainly consists of documents pertaining to the lives of Louis and Grete Rosenzweig. There are several personal documents, such as letters or diaries, as well as official documents concerning, for example, Louis's occupational career.

The Louis Rosenzweig Collection records the personal experiences and professional lives of Louis and Grete Rosenzweig and the family's efforts to attain restitution for their experiences in Germany. Among the papers in this collection are a substantial amount of restitution correspondence and documentation as well as papers that documented their lives in Germany, including their education, employment and professions, and Louis Rosenzweig's military service. Other papers focus on their immigration to the United States or on other family members.