This Collection consists primarily of English, German, Hebrew, and French language correspondence concerning Reform Judaism, Zionism; the founding of the American Jewish Historical Society; the Jewish Publication Society; B'nai B'rith; the legal position of Jews in England and the United States with particular reference to the Naturalization Acts; the religious and social life and the history of Jews in Russia and Poland; Bible readings in public schools; the study of Jesus in Jewish Sabbath Schools; anti-slavery issues in the Fremont Campaign in 1856; and other correspondence pertaining to his numerous activities.

The collection contains three circumcision registers (Mohelbuecher) with some entries from Prague, 1816 and Baiersdorf, 1819 and mostly from Munich, 1826-1885. In addition there is a ‘Memorbuch’ from Fuerth, Bavaria.

This record group includes documents created and maintained by the Office of the President, the Office of the Executive Director and the Chair of the Division Coordinators/Directors Committee. Prominent is the Henrietta Szold series, containing correspondence by and to Szold as well as printed materials written by and about her. The files in this record group were created by a national president or executive director, or for their use, or maintained in their office during their years in office. Included are correspondence, minutes, memos, publications, reports and subject files on topics with which these individuals were involved.

The Hadassah Archives documents the activities of Hadassah, the Women's Zionist Organization of America. Founded in 1912, the organization engaged hundreds of thousands of American Jewish women in the Zionist project. Materials include extensive records of its social welfare projects in Palestine and later Israel, such as Youth Aliyah and the Hadassah Medical Organization. Administrative records document the organization's governance, operations, and functions. The collection also includes the papers of Hadassah founder, Henrietta Szold, as well as the organization's national presidents, executive directors, and other important individuals. Additional materials also document Hadassah's organizational activity in the United States such as annual and midwinter conventions and the dozens of active local chapters from all over the United States. Hadassah maintained an active publishing schedule, and the records include hundreds of published newsletters, flyers, and magazines. Other materials include thousands of photographs, extensive audiovisual material, and hundreds of artifacts.

The Hadassah Medical Organization Records in the Hadassah Archives document Hadassah's work in providing health care resources in Palestine/Israel since 1918. The activities documented revolve around the development of the Hadassah Hospital; health centers; dental centers; occupational and rehabilitative services; medical, nursing, dental, and pharmacy schools; as well as numerous educative and preventive projects, especially those aimed at infant care. The documents also reflect the history of the Yishuv (Jewish settlement in Palestine) and the establishment of the State of Israel. The record group contains articles, clippings, correspondence, financial records, fundraising material, minutes, personal accounts, press releases, publicity material, reports, and statistical reports.

Louis Lipsky (1876-1963) was a noted Zionist leader, journalist, and writer. The collection contains personal correspondence, memoranda, speeches, magazine and newspaper articles, manuscripts, drafts of books, and organizational materials concerning the Zionist movement, and various Jewish organizations.

The file contains the correspondence of Ludwig Pinner at the Central Bureau for the Settlement of German Jews of the Jewish Agency and comprises two folders.

This collection contains Marvin Lowenthal's correspondence, journals, diaries, documents, photographs, memorabilia, and printed materials relating to his life, writings, Zionist activities, and relief work on behalf of German Jewry. Includes material on his youth, school work, and college years, as well as autobiographical writings and family correspondence containing information on Horace Kallen and early 20th century Zionist activities. Of particular note is his later correspondence with Jacob Billikopf, Jerome Frank, Horace M. Kallen, Elmer Rice, Eugene C. Taylor, and Stephen S. Wise.

The Papers of Max J. Kohler (1871-1934) document his life's work as lawyer, historian, writer, researcher, and defender of Jewish and immigrant rights. Correspondents include many of Kohler's contemporaries in the field of history and immigration law including Cyrus Adler; William Taft; John Bassett Moore; Mortimer Schiff; David Hunter Miller; Baron and Baroness de Hirsch; the Straus Family including Oscar Straus; Luigi Luzzatti; Leon Huhner; and Julian Mack. Subjects include U.S. immigration law, American-Jewish history, Col. Alfred Dreyfus, Haym Salomon, Ellis Island, Rabbi Kaufmann Kohler, the publication God in Freedom, international treaties, and the Peace Conference of 1919.

The Baron de Hirsch Fund Records document the organization's involvement in the planning of agricultural communities across the United States and to some extent in South America; the founding and administrative dealings of agricultural and trade schools; the establishment of the Jewish Agricultural Society; and the business records of the Fund itself. In addition, the collection documents the protection offered to immigrants through port work, relief, temporary aid, promotion of suburban industrial enterprises and removal from urban centers through the Industrial Removal Office, land settlement, agricultural training, and trade and general education. In this respect, the collection is of major interest for Jewish genealogists as it documents a number of individual immigrants. In addition, the collection contains documentation on the administration and organization of the fund, documentation on Jewish farming colonies such as the Jewish Agricultural Society, Woodbine Colony and Agricultural School, and documentation on the Baron de Hirsch Trade School. In addition, the collection contains blueprints and photographs of facilities.

The Youth Aliyah Records in the Hadassah Archives document Hadassah's work with multiple international organizations to rescue Jewish children from continental Europe to Palestine from 1933-1945. The collection also documents Hadassah's involvement with Youth Aliyah since 1946 in providing residential, educational, vocational, rehabilitative and therapeutic care for displaced and at-risk youth from around the world.