The collection contains Bernard G. Richards personal and official correspondence, papers from his involvement with the American Jewish Congress and Jewish Information Bureau, published and unpublished writings, publications collected by Richards, articles about Richards and his activities, correspondence and articles from testimonial dinners in honor of Richards, and photographs. Significant correspondents include Joseph Barondess, Louis D. Brandeis, Vladimir Jabotinsky, J.L. Magnes, Louis Marshall, Franklin D. Roosevelt, Jacob H. Schiff, Philip Slomovitz, Arthur Hays Sulzberger, Morris Winchovsky, and Stephen S. Wise.

Founded in 1969, the American Association for Ethiopian Jews (AAEJ) was instrumental in the international effort to promote recognition of the Beta Israel (known among non-Jewish Ethiopians as "Falashas") by Israeli authorities, and to assist Jewish emigration from Ethiopia to Israel. The extensive files of the AAEJ include case work files, research materials and Jewish artifacts collected in Ethiopia by AAEJ workers. In the wake of the successful evacuation of Ethiopian Jewry to Israel in 1993, the AAEJ decided to disband and voted to deposit its records at the American Jewish Historical Society. Included are correspondence, office files, photographs, slides, videotapes, audiocassettes and other materials which pertain to AAEJ's efforts to raise the consciousness of the American Jewish community about this unique Jewish subculture. The organization's papers supplement those of its founder, Graenum Berger, which are also held at the American Jewish Historical Society.

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.