The bulk of the collection consists of correspondence to Bertha Badt-Strauss from various writers and friends between 1940 and 1969. The letters deal with topics related to emigration/immigration, Judaism, Zionism and publishing opportunities in the United States and Mexico. Included are manuscripts, poems, photographs and clippings of Badt-Strauss's correspondents, as well as some of her own writings.

This collection of mainly anti-Semitic material was compiled by a Jewish librarian of German descent who infiltrated the pro-Nazi community developing in New York City in the years leading up to World War II. The bulk of the collection consists of publications and printed matter, with the notable exception of narrative reports that describe first-hand experiences and observations of Nazi-affiliated events. Document types include advertisements, event announcements, books, clippings, correspondence, magazines and newspapers, travel guides, political memorabilia, and other print ephemera.

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 Leo Breslauer Collection documents the professional career of Rabbi Leo Breslauer, and to a smaller extent, his personal life, especially in relation to his and his family’s departure from Germany. Prominent topics include his rabbinical work at congregations in Fürth, Germany and in New York City, his writings, and his thoughts on Zionism.

This collection contains materials by and about Ofra Core, her husband David Uriel Core, and her father-in-law, the noted German-Jewish and Israeli philosopher Hugo Bergmann (1883-1975). The collection contains correspondence from Hugo Bergmann as well as other materials about him and his family. Materials by Ofra and David Core are also found in this collection, and include a photo album, material about the Japanese religious group Mayuka, and some of Ofra's professional materials from her career as a records manager for the United Nations.