The Flora Morstadt Collection documents the life of Flora Morstadt and her family mainly through the years 1938-1944. The bulk of the collection is comprised of letters from Flora Morstadt to her family during World War II. Other materials include documents relating to emigration, post-war identification cards, and Flora Morstadt’s recipe book.

The collection contains materials pertaining to Fraenkel – Neugarten Family.

This collection contains a wide range of materials, ranging from personal correspondence to programs and mass mailings, which for the most part have to do with various community institutions and membership organizations of the pre-war Frankfurt community.

The Franz and Grete Hillinger Collection holds the papers of Franz and Grete Hillinger and of other Hillinger family members. The collection focuses on former family property in Brieselang, Germany, with some information on the family history and specific family members' details. Documentation includes personal, legal, financial, and official correspondence, identification papers, curricula vitae, articles on family history, and wills.

This collection contains the papers of the lawyer and historian Franz Kobler (1882-1965), with the major focus of the papers here on his historical works. Included here are manuscript drafts, correspondence, official papers, notes, newspaper clippings, and a few photographs.

22 notebooks (carbon copies), comprising 1,998 pages, dictated by Franz Rosenzweig and addressed to Martin Buber, pertaining to the Rosenzweig-Buber translation of the bible.

Photocopies of Schoenberner's literary estate, the originals of which are in possession of the Hoover Institution on War, Revolution and Peace, Stanford University:

This collection documents the passionate involvement of Franz Viktor Grünfeld (Frank Victor) in the field of graphology, the study of handwriting as a means of determining personality traits. Grünfeld was active in the field from 1920 until 1965. He published extensively and corresponded with leading graphologists, and also provided handwriting analysis services to companies and individuals. The collection also contains some personal material, as well items concerning his work with his family's textile firm, FV Grünfeld Landeshuter Leinen und Gebildweberei, prior to his immigration to the United States in 1939.

The Fred Cahnmann Family Collection documents portions of the lives of Fred Cahnmann and other Cahnmann family members. In addition it provides genealogical research on the Cahnmann and related families. The collection includes many family trees, correspondence, photographs, official documents, articles and newspaper clippings and research notes.

Personal and professional documents of Fred Grubel relating to his work in the Jewish community in Leipzig and later on in the Leo Baeck Institute.

The Fred Halbers Collection documents the life and work of the actor, artist, and writer Fred Halbers. The main subjects of the collection are his life, his writing and his artwork, although material concerning other members of the family is also present. The collection consists of manuscripts, correspondence, clippings, official documents, notes, some photographs, negatives and slides.

The Frederick Brunner Collection incorporates the research of the banker and LBI board chairman Frederick Brunner. Prominent subjects encompassed in this research include the Rothschild family and the history of Jews in Landau in der Pfalz. Some research on banking history and Jews as bankers may also be found here. The collection contains extensive newspaper clippings, articles, correspondence, notes, genealogical tables and family trees, and a few photographs.

The Frederick Lachmann collection includes fragmentary materials that allow us all but a glance into the life and professional activities of Frederick Lachmann and members of his family. The core of the collection consists of printed copies of articles that Frederick Lachmann wrote for Aufbau. Also included in the collection are correspondence, photographs, and writings.

This collection documents the life and work of Frederick (Fritz) Ritter, an actor, writer, and academic. Included are manuscripts of published and unpublished writings, articles, reviews, clippings, notes, personal documents, and photographs.

"Mein Weg von Karlsruhe ueber Heidelberg nach Haifa" is the memoir of Frieda Hirsch (née Goldberg) (1890- ). She describes the history of her parents, her upbringing in Karlsruhe as daughter of a well-to-do Jewish-orthodox family, her education at a humanistic high school (Gymnasium), her university studies (medicine) in Heidelberg, Karlsruhe and Breslau (1908-1913), and life during World War I in Karlsruhe and Heidelberg. She married Albert Hirsch (1887-1954) in 1915, a medical student and member of the Zionist student organization "Verein Juedischer Studenten" and settled in Heidelberg, where Albert worked as a pediatrician. Frieda Hirsch tells about life in Heidelberg, the births and upbringing of her children, various friendships (among others with Georg Hermann, Frieda Reichmann, Erich Fromm, and Eugen Taeubler), Zionist activities of her husband, and first anti-Semitic persecutions in Heidelberg in 1933. She gives detailed testimony of her emigration from Heidelberg via Salzburg and Triest to Haifa, where the family settled, of the difficult first years in Palestine with her husband opening a new medical office, and describes her experiences during World War II in Haifa, the founding of the state of Israel in 1948 and moving to Kiryat Ono after her husband's death in 1954.

The second text, an attachment of Hirsch's memoir, contains a genealogical table and a detailed history of Frieda Hirsch's (née Goldberg) and Albert Hirsch's families.

The Frieda Lawrence Letters hold some letters of Frieda Lawrence primarily sent to her sister Else Richthofen-Jaffé and Else's son Friedel Jaffé. Included in the first folder of the collection is a summary of the letters by Guenther Roth, which also provides context for them and biographical details on Frieda Lawrence.

Correspondence, including letters from Alvin Johnson and Thomas Mann.

The collection contains legal documents, correspondence, photographs, and manuscripts regarding the Friedlaender family of Oppeln and the brewery (Schlossbrauerei M. Friedlaender) which they owned.

The collection contains various documents pertaining to Fritz Frank, most of them manuscripts written by him, and comprises 16 folders.

Original correspondence consists of one letter each to Peter Pringsheim (1912); Joseph Koeth (1928); and A. Sommerfeld; as well as six letters to Ernst Stern (1907-1908). A handwritten 1933 letter from Fritz Haber to Chaim Weizmann in Mannern, Switzerland (6 pages) is available as a photocopy only. Also included is a typescript by Hans Schaeffer on Jews in Breslau (photocopy), Die soziale, politische und religioese Stellung der juedischen Familien in Breslau um die Jahrhundertwende 1900. The typescript is part of a letter by Hans Schaeffer to Johannes Jaenicke, also in the collection.

This collection offers an insight into the life of Fritz Kaufmann, philosopher and early disciple of Edmund Husserl and the phenomenologist movement. He lectured in philosophy at the Universities of Freiburg and Berlin until forced to leave the country and immigrating to the United States in 1938. The bulk of the collection focuses on Kaufmann's professional responses to the increasing restrictions of the Nazi Regime between the years of 1934 and 1936. Furthermore, the collection includes lecture scripts and a shorthand manuscript of Kaufmann relating to his last unfinished work, the introduction of Leo Baeck's book Aus drei Jahrtausenden.

The Fritz Mauthner Addenda Collection largely consists of correspondence to and from Fritz Mauthner and its translation. Also included are family and personal papers, transcriptions of a diary, notebooks and articles.

The collection contains a manuscript by Fritz Meir Fraenkel titled "Deutsche Juden im alten Jischuw" (typescript, 16 pp.) about German-Jewish emigration to Palestine before the founding of the Zionist movement, focusing on "Kolel Hod", an organizational and financial institution and a "Landsmannschaft" founded by immigrants of German and Dutch origin in Palestine in 1837.

The collection, furthermore, includes offprints and clippings of articles by Fraenkel (such as "Zur Folklore der Berliner Juden from" (1957), "Zur Deutung einiger Kontraktionen im Hebraeischen" (1958), "Abraham und Aron – zwei Beitraege zur biblischen Namensforschung" (1962), "Drei verkannte Fluessigkeitsbenennungen im Hebraeischen" (1967), "Deutsch und Hebraeisch miteinander verwandt?" (1969)), book reviews by Fraenkel, and ten editions of the periodical "Sprachwart. Monatsblaetter fuer Sprache und Rechtschreibung" (1962-1969) as well as three editions of the journal "Archiv fuer das Studium der neueren Sprachen" (1961-1965) mostly containing articles by Fraenkel on linguistic matters (German and Hebrew language).

The linguist Fritz Meir Fraenkel was born in Berlin in 1906. He was a member of the Zionist youth movement "Blau-Weiss" and other Zionist organizations and wrote for the weekly "Juedische Rundschau" until 1938.

He immigrated to Palestine in 1933 and settled in Jerusalem. He worked for "Keren Hayesod" and other institutions and continued writing articles for various Hebrew journals and newspapers.

Fraenkel died in Israel in 1976.

This collection consists of materials pertaining to Fritz Rafael Aronstein.

Papers in this collection pertain to the academic life and career of theoretical physicist Fritz Reiche in Germany and the United States. Included are a curriculum vitae, memoirs, letters of recommendation, clippings from public documents such as newspaper articles, faculty letters, obituaries, as well as some personal correspondence, a death certificate, a manuscript and a few photographs.

This collection consists of a "Lenel family archive" created by Fritz Victor Lenel. In addition to materials common in genealogical collections, such as genealogical tables and photocopies of archival documents, this collection includes original material relating to Lenel's ancestors, many of whom were prominent members of the Mannheim Jewish community, and very thorough research notes and correspondence with distant relatives.

This collection holds the documents of Ismar Frost, his wife Rose Frost (née Wegner) and their family. The collection consists of private correspondence, professional and official correspondence, a large amount of restitution documents, personal documents and family photographs. It also holds Ismar Frost’s and other’s writings – fiction and non-fiction.

The collection contains various materials pertaining to the Fürth-Katzenstein family.

This collection contains a variety of material regarding Gabriel Riesser, such as personal and professional correspondence in his own hand; a typescript, describing two publications about Riesser; photographs of his portrait; and a 1983 letter to the Leo Baeck Institute, discussing correspondence from Adolphe Cremieux to Gabriel Riesser. Also included is an album with personal messages from friends and colleagues.

Correspondence, tax documents, manuscript about Palestine 1935; correspondence and documents related to the Kindertransport. The bulk of the collection consists of letters from Guenther und Werner Koppel, soldiers in World War I.