Baron Horace (Naftali Herz) de Gunzburg Collection consists of diverse materials that pertain to the state of Jews in the Russian Empire in the second half of the 19th century and to the philanthropic activities of Horace and Joseph Gunzburgs. Materials comprising the collection shed light on the Gunzburg family's involvement in improving Jewish education, civil rights movement, and their efforts to improve general well being of the Jews in the Russian Empire. Bulk of the collections consists of materials pertaining to the activities of the Hevrah Mefitsei Haskalah (Society for the Promotion of Culture Among the Jews of Russia, Rus. Обшество для Распространения Просвещения Между Евреями в России) and to the Committee for the Improvement of Daily Life of Jews in the North-West Region (Комиссия по Улучшению Повседневной Жизни Евреев в Северо-Западном Регионе)

The collection contains the records of the Foreign Committee of the Bund, a Jewish political party espousing socialist democratic ideology as well as cultural Yiddishism and Jewish national autonomism. While a Central Committee led the Bund in the Russian empire, outside of Russia the party was represented by its Foreign Committee, which was based in Geneva, Switzerland. During the period when the Bund had no legal status or was semi-legal in Russia, the Foreign Committee assumed many important organizational functions of the party apparatus.

This collection contains documents relating to Isaac A. Hourwich’s role as an economist, publicist, statistician, lawyer, author, and authority on immigration, as well as his involvement with the labor movement and the formation of the American Jewish Congress. There are reports, minutes of meetings, memoranda, clippings and correspondence, and manuscripts and articles about Jewish labor, Socialism, Russia, Marxism, immigration, and other subjects. These materials demonstrate Hourwich’s important role in American labor, immigration theory, and political and economic theory.

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, which is a sub-group of RG 245 HIAS, includes the records of the main HICEM office in Europe prior to and during World War II. There are also some records from the post-war period relating to the dissolution of HICEM, HIAS’s taking over of HICEM’s operations and HIAS’s work with displaced persons.

The collection represents the papers of Morris David Waldman (1879-1963), a rabbi, social worker and communal leader, who was appointed executive secretary of one of the main Jewish defense organizations, the American Jewish Committee (AJC), in 1928. The executive secretary had top executive function at the organization and was in charge of working out and implementing the organization’s projects and policies regarding monitoring the civil and human rights of the Jews, and intervening on behalf of the Jews both in the U.S. and abroad. In 1942, Waldman was promoted to executive vice-president, a position he held until his retirement in 1945. The Morris Waldman Files relate to all of Waldman's activities as acting executive secretary and vice-president of the AJC.

The collection contains the records of the Paris Office of the American Jewish Committee, established in 1947 to study conditions of Jewish refugees and Jewish communities in Europe and North Africa. The Paris Office was involved in major programs and projects of the AJC to study the needs of and aid to the Jews of Europe and the Middle East. The materials include correspondence, memoranda, reports, clippings, photographs and published materials.

The Records of the Forward Association collection consists of the administrative records of the Office of the General Manager of the Forward Association, publisher of the Jewish Daily Forward. The collection contains correspondence, financial materials, minutes, reports, and information related to various anniversary celebrations. These materials serve to illustrate the professional activities of the Forward Association and its General Manager and show the Forward’s importance.

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.