Correspondence, manuscripts, lectures, notes, diaries, notebooks, reports, financial records, blueprints, photographs, and printed materials of Y.C. James Yen and the IIRR concerned with the development, sharing, and financing innovative methods of teaching, improving agriculture, health and family planning, and education in impoverished villages. Among the cataloged correspondents are: Pearl Buck, William O. Douglas, Nelson Rockefeller, and DeWitt Clinton.

Correspondence, manuscripts, documents, financial records, memorabilia, and printed materials. The papers relate to numerous organizations--social, political, civic, and philanthropic--with which he was associated. Among these organizations are Legal Aid Society; Prison Association of New York; Outdoor Recreation League; Socialist Democratic League and National Party; American Alliance for Labor and Democracy; Constitutional Democracy Association; National Security League; YMCA, etc. Included among the papers are his journals and diaries, 1884-1950. An incomplete set of his letterbooks 1905-1960 and some family papers relating to real estate and financial matters

Correspondence, manuscripts, documents, memorabilia and printed materials. The correspondence deals with literary and political topics, from such people as Hayden Carruth, Irwin Edman, Lola Ridge and Norman Thomas; numerous manuscripts of Mrs. Marshall's writings, including the notes, drafts, manuscripts and proofs of her last novel THE HILL IS LEVEL and various manuscripts of the stories published in THE CONFRONTATION AND OTHER STORIES, and numerous manuscripts of poetry and short stories. Also included is material on the World War II draft of 19-year-olds, economic aid for Western Europe, the Vietnam War, the origin of SANE, the Committee for Nuclear Responsibility, the Amchitka Islands nuclear tests, the Task Force against Nuclear Pollution, and personal correspondence from her own and her husband's families