This collection contains documents of journalist and left-wing political activist Paul Novick, consisting mainly of correspondence, subject files, manuscripts, photographs, and newspaper clippings. These materials relate to Novick’s career as long-time editor of the Morning Freiheit (Morning Freedom), his important role in the worldwide Communist movement, the history of the Freiheit itself, and Jewish and general politics. These materials demonstrate Novick’s important, and changing, role in the history of Communism, as well as his career as a Yiddish journalist and author.

This collection contains the personal and professional papers of historian and bibliographer Philip Friedman. These materials include correspondence with individuals and with organizations, newspaper clippings, subject files, manuscripts of works by Friedman and by others, and some of Friedman’s personal documents. These materials relate to Friedman’s work on the histories of various Jewish communities, particularly those in Poland, and his work gathering source documents about the Holocaust.

This collection contains the personal and professional papers of Shmuel Mordkhe Zygielbojm, a Jewish-Polish Socialist politician, Bund leader, member of the National Council of the Polish Government-in-Exile in London, and a labor and political leader. These materials include Zygielbojm’s writings, personal correspondence, clippings, and some photographs. These materials relate mainly to Zygielbojm’s work in London as well as the worldwide reactions after his suicide.

Raphael Lemkin, an international lawyer, initiated the use of the term "genocide," and succeeded in persuading the United Nations to adopt the Genocide Convention in 1948. Documents include personal correspondence and artifacts; correspondence, documentation, clippings, and articles regarding the United Nations adoption of the Convention on the Prevention and Punishment on the Crime of Genocide treaty; and source material for the unfinished manuscript, History of Genocide. Collection also includes photographs, identity cards, articles, papers, essays, clippings, magazines, research materials, term papers, posters, United Nations materials, and microfilm.

This collection contains mainly correspondence between staff of the JDC Landsmanshaftn Department and members of various landsmanshaftn, benevolent organizations of immigrants originally from the same communities, as well as between the Landsmanshaftn Department and the interest-free loan associations (gmilas khesed societies) and heads of the various Jewish communities, mostly in Eastern Europe and the former Soviet Union.

The Renate Bridenthal Family Collection primarily documents the lives and especially the emigration experiences of Renate Bridenthal's parents, Elchunon and Irene Rubin. Papers of Irene Rubin are prominent in the collection and include restitution correspondence and her writing. Documents related to Renate and her brother Harribald's early lives and emigration is are also present. The collection consists of extensive personal and restitution correspondence, official documents, newspaper clippings regarding Irene Rubin's death, drafts of her writing, and three albums.