The Julius and Elisabeth Hirsch Collection holds the papers of this couple, with much of the collection consisting of family correspondence. Prominent subjects include the immigration of family members and genealogy of the family. In addition to extensive correspondence and family trees the collection includes notebooks, essays and articles, newspaper clippings, photographs, early drafts of Julius Hirsch's family memoir, and research notes.

The collection contains photocopies of various documents relating to numerous members of the Glass family and their activities during the early 20th century. There are also several family trees.

The collection contains various documents related to the Julius Herz, a goldsmith, and his family.

The collection documents the lives of members of the Picard, Dreyfuss, Epstein and Kahn families in Alsace/Lorraine (now France) and Baden.

This collection documents the family history of art historian Julius S. Held (1905-2002), who was born in Mosbach, Germany and immigrated to the United States in 1934. The bulk of the collection consists of personal family correspondence. Other materials include genealogical tables, a few business and educational records, personal notes, a few anti-Semitic flyers, clippings, a ketubah, and a portrait of Rabbi David Sinzheim.

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 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.

The bulk of the materials in this collection consist of family trees for the Hamburger and Jutrosinski families. There are also a few photocopies of family documents and papers.

The collection traces the history of the Kaiser family and the lives of its members over the course of the 20th century through correspondence, documents, writings, family history information, and photographs.

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.

This collection contains family trees with data going back to 1495, as well as some correspondence and other papers and photographs.

The collection contains comprehensive personal and professional official documents of Dr. Karl Isaac-Krieger as well as genealogical information regarding his family and that of his wife, Auguste Isaac-Krieger nee Krieger.

The Katzenstein Family Collection holds the papers and correspondence of Martin Katzenstein and Anna Charlotte Katzenstein. The collection contains genealogical materials, personal letters, and official papers relating to Anna's time spent living in England and Chile.

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 contains family trees of the Kempner, Davidsohn, and Wolffsohn families from the mid 18th to early 20th century, including birth dates and some death dates, as well as brief biographies of David Kempner and Friederike Kempner.

The Kirby Kantor Fuchs Collection consists of the papers of Fred and Lisa Kirby and their family members in the Kantor, Fuchs, Mahrer, and Schüssler families. Most of the collection consists of the official documents of the family members, along with restitution correspondence, and details the family members' early lives in Europe and their later emigrations to England and the United States. The collection includes many official documents, restitution correspondence, family photographs, educational and professional papers, some genealogical research, and other papers.

Humorous Oliven family history written by Fritz Oliven (Rideamus), accompanied by some genealogical notes and various papers pertaining to the family and business of the prominent Hannover banker Ephraim Meyer.

The bulk of the collection consists of correspondence from Fanni Blatny, née Klein in England to her niece Alice Jaffé, née Rice in Maryland. Also included are correspondence and immigration documents pertaining to the extended Klein family. There are explanatory notes by Alice Jaffé throughout the collection.

This collection contains correspondence between Paul Arthur Metzger and Richard Kohn and the correspondence of Lilly Kann as well as eulogies for Paul Kann and Minna Kohn and the Mayer Kohn family tree (1796-1936). All items are photocopies.

The collection provides information about the Kress-Heinemann family. It includes school report cards of Eva Heinemann and Walter Kreslawsky, recipes, genealogical research results and a portrait of Walter Heinemann.

The collection contains materials relating to Kurt Goldsmith, a New York-based photographer, and his wife Grete née Lendt. Kurt and his family escaped Nazi Germany to ultimately settle in New York City. The materials trace the journey that they and their family took to seek asylum in the United States. The collection is made up of personal documents, correspondence, photographs, and other archival materials.

This collection contains materials about the family of Kurt and Ruth Neu. Personal materials include family correspondence, photographs, and genealogical information, while professional materials for both Kurt and Ruth Neu include unpublished typescripts.

This collection contains the papers of German lawyer and government official Kurt Friedlaender. It also includes vital and personal documents relating to his brothers, parents, and ancestors.

This collection documents the personal and professional life of aerospace engineer Kurt Heinrich Hohenemser (1906-2001) in Germany and the United States. Mainly comprised of diaries and correspondence, materials in this collection describe Hohenemser’s education in Germany, work at and dismissal from the University of Göttingen in 1933, work for the aircraft manufacturer Anton Flettner during World War II, attempts to regain his position at Göttingen, and his family’s immigration to and new life in the United States. Correspondence with family and friends throughout Germany includes discussion of the political, economic, and social situation in Germany both during the World War II and during the post-war and Cold War periods. Also included in the collection are official documents and correspondence pertaining to Kurt Hohenemser’s parents, the musicologist Richard Heinrich Hohenemser (1870-1942) and his wife Alice Matilda Florence Hohenemser née Salt (1879-1942).

The collection consists primarily of German publications by Dr. Kurt M. Dresel during the interwar period.

The collection holds materials pertaining to the physician and musician Kurt Singer, including some of his musical writings; reviews of his books; correspondence, including letters from Max Friedlaender, Wilhelm Furtwaengler, and Siegfried Ochs, and others. Also included are papers of Kurt Singer’s father, the Hungarian-born Moritz Singer, who served as rabbi in Koblenz, including letters from Helmuth von Moltke and Duke Friedrich I of Baden; and documents from his studies at the universities of Berlin and Jena, including a thesis, as well as academic reports signed by Moritz Lazarus, Heymann Steinthal, and Theodor Mommsen.

This collection contains family papers of the Zander and Prager families, as well as some of Kurt Zander's personal papers. There are several photographs of various family members and family homes in Prussia and Turkey, and a body of correspondence which documents the Zander family's time in Turkey and Greece in 1904-1905.

This collection contains manuscripts and family trees relevant to the Lamm family, which originated in Wittelshofen.

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.

This collection contains several business papers of the cotton mill M. S. Landauer in Hürben, Baden-Württemberg, and Augsburg, Bavaria, as well as several Landauer family documents and some correspondence. A large second series consists of extensive Landauer family trees.