Mizrakh Yidisher Historisher Arkhiv Collection consists of diverse materials that pertain to pogroms in the period between 1918 and 1921 that took place mostly in Ukraine but also in Belarus, Poland, and Russia. There is a wide variety of topics that are covered in the collection including Ukrainian-Jewish relations during a short lived Ukrainian Republic, Ukrainian-Jewish political, communal, and governmental organizations, Ukrainian government and the role of politicians and military Commanders in pogroms, most notably Symon Petlyura and Ataman Grigoriev, pogroms and its aftermath, military occupation of Ukraine by the German, Polish, Bolshevik and General Denikin’s armies and its relationship to pogroms, Jewish self-defense and relief work. Also included here are materials pertaining to the trial of Sholom Schwarzbard who was tried in France for assassination of Symon Petlyura. The collection consists of of large amount of lists and eyewitness testimonies, correspondence, complaints and petitions, reports and resolutions, statements and proclamations, memoranda and circular letters, conference materials, statues and by-laws, clippings and bulletins, military orders, and photographs.

The collection documents the National Jewish Welfare Board's (JWB) evolution from an organization founded in 1917 to provide support for soldiers in times of war to an agency involved in all aspects of Jewish life both in the United States and abroad. In 1990 JWB recreated itself as the Jewish Community Centers Association of North America.

This collection contains the papers of Julian Hirszhaut, a Yiddish journalist and author of several works about the Holocaust in Poland. He collected a great number of historical documents on this topic, including hundreds of eyewitness accounts, which make up an important part of this collection. The materials in this collection relate to Hirszhaut’s important work gathering documents and testimonies of the Holocaust, as well as to his other professional activities as a journalist.

The Marc Ratner Papers consist of materials pertaining to Marc Ratner's political activities as one of the leaders of the SERP (Sotsialisticheskaya Yevreyskaya Rabochaya Partiia, Jewish Socialist Workers' Party, Rus: Социалистическая еврейская рабочая партия) which was a left leaning Zionist revolutionary party. The collection consists of correspondence, circular letters, clippings, minutes of meetings, essays, manuscripts, political resolutions and statements. The bulk of the collection consists of correspondence between party members, minutes of meetings and manuscripts.

Maxim Vinawer Papers consist of materials pertaining to Maxim Vinawer’s activities as a political and a communal leader. The collection covers the period between 1915 and 1926. These materials illuminate Vinawer’s participation in Russian politics as one of the leaders of the liberal Constitutional Democratic Party (Kadets), his appointment as a Minister of Foreign Affairs for the Crimean Regional Government in 1919, and his activities as a prominent figure among Zionist and émigré groups in Paris. The collection consists of correspondence, circular letters, memoranda, bulletins, clippings, minutes of meetings, essays, manuscripts, drafts and notes

This collection contains the personal and professional papers of William Edlin, editor of The Day and a prominent Socialist. It includes correspondence with individuals and with organizations, newspaper clippings, manuscripts of works by Edlin and by others as well as translations done by Edlin, and some of Edlin’s personal documents. These materials relate to Edlin’s involvement with The Day, with the Socialist Party, the Workmen’s Circle, various labor and Zionist organizations, literary clubs and activities, and with music, art and drama.

This collection consists of general reference files from the New York City headquarters of the American Jewish Committee (AJC). Materials originated in various AJC departments and were maintained by a Central Records office until 1962, when records retention policy was decentralized. Document types include correspondence, memoranda, reports, clippings, and published materials concerning individuals, businesses, government agencies, and other organizations related to the work of the AJC.

This collection contains incomplete annual convention programs (1922-1986), organizational minutes (1912-1973), newsletters (1967-1981), constitution and by-laws, plaques, awards and citations. Also contains newspaper articles about the Federation and correspondence with affiliated organizations and hospitals.

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.

The May Cohn Russia and Soviet Union Collection (Vilna Archives) includes materials dealing with a wide range of topics mostly pertaining to Jewish life in the Russian Empire and the Soviet Union and to a smaller extent to everyday life of ordinary Russian citizens. The collection consists of official government documents such as reports, decrees and regulations, circular letters, lists, vital records, Census records, residency and emigration permits. Also included here are manuscripts, correspondence, printed materials, petitions, announcements, posters, questionnaires, and minutes of meetings. Materials collected here shed light on the way Jewish religious and civil life was administered in the Russian Empire and the Soviet Union.