This collection contains the minutes, correspondence and financial records of the I.L. Peretz Yiddish Writers’ Union from its founding in 1915 until 1973. Among the correspondence is a fair amount concerning the Fund for Jewish Refugee Writers, unions and union grievances, requests for aid from Jewish writers and activists in New York and abroad, and labor disputes and strikes.

This collection contains manuscripts of some of the earliest Yiddish plays, correspondence between playwright, poet, and director Abraham Goldfaden, the father of Yiddish theater, and various actors and writers, as well as some family correspondence, newspaper clippings on Goldfaden and his impact on Yiddish theater, articles by Goldfaden on a variety of topics, and various other theater materials, such as title pages of plays, programs and song sheets. The collection illustrates Goldfaden’s great and ongoing influence on Yiddish theater.

Arthur Lamport was a banker and philanthropist, who helped support economic development among the Jewish refugees in the Dominican Republic. These materials relate to his efforts in the Dominican Republic, and include letters, telegrams, reports, meeting minutes, and a diary.

This collection contains correspondence between Horace M. Kallen and many important individuals and organizations, as well as manuscripts, notes and other materials for speeches, financial documents, research materials, academic records, and various other assorted items. These materials serve to illustrate Kallen’s important role in philosophy, education, religion, and politics and his deep involvement with consumer rights, environmental controls, Jewish issues, and civil liberties.

This collection contains the personal and professional papers of Isaac Nachman Steinberg, a Russian-Jewish political writer, leader of the Left Socialist Revolutionary Party during the 1917 revolution in Russia, People’s Commissar of Justice in the first Bolshevik government, leader of the Jewish Territorialist Movement and of the Freeland League for Jewish Territorial Colonization, and a founding member of the YIVO Institute in Vilna. These materials include Steinberg’s writings, personal correspondence, clippings, journals, meeting announcements, and some photographs. These materials relate mainly to Steinberg’s work with the Freeland League and plans for the large-scale settlement of Jews in various places around the world.

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 manuscripts of plays, articles and other writings, correspondence, memoirs, photographs, theater programs, and personal materials of Yiddish playwright, novelist, journalist, travel writer, and theater director Peretz Hirschbein. The collection helps to illustrate Hirschbein’s importance and lasting impact upon the revival of Yiddish theater and literature in the early twentieth century.

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.

This collection contains the personal and professional papers of Shmuel Niger, including correspondence with many important literary figures, as well as manuscripts by Niger, writings about Niger written by others, Niger’s speeches and lectures, selections from his published writings, and biographical materials. These materials serve to illustrate Niger’s great importance to Yiddish literary criticism and Jewish historical writing as well as his role as a writer on contemporary themes, a teacher and lecturer, editor and communal leader.

This collection contains correspondence, pamphlets, periodicals, newspapers, press releases, writings, clippings, brochures, fliers, and posters from the era of the Spanish Civil War, and later, documenting American and international fund-raising for humanitarian relief of Republican Spain; American and international public opinion about the war; the participation of Jews in the International Brigades; and reminiscences and commemorations of the war and, particularly, of the International Brigades, in later years. A portion of the material on relief work pertains to trade union activities, as documented in papers of Charles S. Zimmerman, of the International Ladies’ Garment Workers’ Union, in his capacity as leader of Trade Union Relief for Spain, in New York City. Other organizations represented include the Medical Bureau and North American Committee to Aid Spanish Democracy; the Spanish Information Bureau in New York; the Friends of the Abraham Lincoln Brigade; and the Israeli branch of the association of volunteers in the International Brigades. There are also autobiographical manuscripts by Benjamin Lubelski and Sigmund Stein, who participated in the International Brigades; and contemporary publications in a variety of languages, including publications of the anarchist-leaning Spanish trade union confederations CNT-FAI.