The Annual and Mid-Winter National Conventions Records document the proceedings and outcomes of the conventions and conferences attended by Hadassah’s National Board as well as by convention delegates from the various regions of Hadassah. The conventions in particular are where local and regional leaders meet with each other and the National Board and learn about Hadassah’s various projects and committees. This record group also includes annual reports from 1926-2001.

This collection contains materials pertaining to the life and career of Boris Smolar, a journalist and editor-in-chief of the Jewish Telegraphic Agency and an author of children's books.

This record group contains materials related to the local units of Hadassah—groups, chapters, regions, and co-ops—as well as Junior Hadassah, a youth organization that functioned as a group within the Hadassah Chapter structure. The record group documents over one hundred years of Hadassah’s growth, and illuminates a century of American Jewish communal life, particularly that of Jewish women, across the United States. The record group reflects the formation, administration and activities of the individual groups, chapters, co-ops and regions, and contains information on local events and programs organized around fundraising, Zionism, Jewish heritage, religion and holidays celebration, the study of Hebrew and Yiddish, women's issues, fashion, health, technology and many other topics.

Hadassah Functions and Operations Records represent the bulk of aid and services provided to Hadassah's membership, from the 1920s to 2011. Materials found in the record group include correspondence, clippings, press releases, manuals and kits for chapters and members to implement programming and chapter structure, fundraising campaigns, scripts, study guides, programming for local and national meetings, biographical files, and training documentation. Departments documented in the record group include Public Affairs, Education, Women's Health, American Affairs, Zionist and International Affairs, Speakers Bureau, Fundraising, Program, Organization, Outreach and Tourism Departments. Materials related to the general administration of Hadassah are also in the record group; these materials include research and development of projects, archives department correspondence and other materials, Hadassah House administration, and strategic planning. The record group also documents Hadassah's efforts to expand membership outside of the United States, by the development of Hadassah International.

This collection contains writings, minutes, financial records, correspondence, printed materials, newspaper clippings, and photographs relating to Broido's employment, investments, and Jewish and non-Jewish communal activities. It includes material regarding the department store, Gimbel Bros. (1934-1966), where he was associated with Bernard Gimbel, and where he served as Executive Vice President and as Chairman of the Advisory Committee (1953-1961); Temple Emanu-El (1957-1970), where he served as trustee and opposed secession from the Union of American Hebrew Congregations; the American Jewish Joint Distribution Committee (1944-1976), serving as President from 1965-1975, and where he was involved in the investigation of the Charles Jordan murder in Prague (1967); the Union of American Hebrew Congregations (1953-1972) where he served as trustee and played an active role in financial matters and relations with the Hebrew Union College; the United Jewish Appeal (1941-1972) where he served as President (1951-1952), trustee and member of the Board of Directors; the New York City Community College (1956-1972) where he served as trustee; and the Department of Commerce and Industrial Development of the City of New York (1961-1971) where he served as Commissioner (1961-1966).

This collection documents the activities, administration, planning, proceedings, and correspondence of the National Jewish Community Relations Advisory Council, 1944-1994. The collection includes correspondence, programs, minutes, proposals, reports, clippings, press releases, and publications.

The records chronicle the ideology behind the Reconstructionist movement, the founding and activities of the Jewish Reconstructionist Foundation, and its growth and transformation from an ideology and movement into an established American Jewish denomination, Reconstructionist Judaism. The records also document two seminal figures in Reconstructionist Judaism, Mordecai Menahem Kaplan and Ira Eisenstein. Included in the collection are the administrative records of the Foundation (minutes, financial records, bylaws), publications produced by the Foundation including manuscript submissions for the influential publication The Reconstructionist, correspondence, sermons, prayer books produced by the Foundation, syllabi, sheet music, photographs, and speeches, among other material. In the correspondence are letters from Martin Buber, J. Edgar Hoover, and Albert Schweitzer.

Collection documents the activities and missions of the Union of Orthodox Jewish Congregations of America (UOJCA), primarily during the presidencies of William Weiss (1933-1942), Samuel Nirenstein (1942-1948), Moses Feuerstein (1954-1965), and Rabbi Pinchas Stolper’s tenure as Executive Vice President (1976-1994).

Founded in 1898, the UOJCA, also known as the Orthodox Union, serves as the leader, organizer, and voice of affiliated Orthodox Jewish congregations in North America. Divisions of the UOJCA reflected most prominently in the collection include the National Conference of Synagogue Youth, the Women’s Branch, the Kashruth Division, the Department of Synagogue Services, the Israel Center, as well as regional branches.

Subjects addressed in the collection include Sabbath and high holiday observance, dietary laws, Baal Teshuva, slaughterhouse legislation, funeral standards, education, and synagogue management and outreach. Materials include correspondence, minutes, clippings, speeches, UOJCA publications, financial documents, and a few photographs.

The material in this record group was culled from Hadassah's Central Files in Israel in the early 1980s to document Hadassah's role in Zionist history. Originally formed from a Zionist women's study group, the first Hadassah chapter in New York had a strong relationship with the Zionist Organization of America (ZOA; then known as the Federation of American Zionists). The material in this record group documents Hadassah's relationship to the ZOA and to other Zionist organizations in the United States, Europe, and Palestine/Israel, particularly in the years leading up to Israeli statehood in 1948. Other subjects addressed in this record group include the founding of Hadassah; World War II, particularly relating to Jewish emigration and refugees; the founding of the United Nations and the debate over recognition of a Jewish state; the partition of Palestine; and Arab-Jewish relations. Included are articles, clippings, convention resolutions, correspondence, diary extracts, memorandums, minutes, press releases, printed ephemera, publications, reports, and speeches.