The large collection covers all aspects of Cordier's life. It contains letters, memoranda, reports, cables, printed materials and photographs, mostly pertaining to his tenure at the United Nations and Columbia University.

The Carnegie Endowment for International Peace established Le Centre Européen de la Dotation Carnegie pour la Paix Internationale in Paris as part of its Division of Intercourse and Education (Division des Relations et de L'Education) in 1912. The Centre was founded with an Advisory Council composed of representative and distinguished statesmen and public leaders of Europe and Asia. An Executive Committee was appointed from this Council with the authority to carry out the work of the Division abroad. The Centre Européen Records (1911-1940, 316 boxes) consist of correspondence; clippings; meeting minutes, agendas, and transcripts; lectures in typescript and printed form; memoranda; financial documents; books, pamphlets, speeches, reports, and brochures in typescripts and printed versions; invitations; maps; posters; architectural plans and drawings; and photographs, which document the founding, administration, and activity of the Centre Européen specifically and, in a more general sense, the work of the Carnegie Endowment in Europe.

Carnegie Endowment for International Peace, established by Andrew Carnegie in 1910, is a private, nonprofit organization dedicated to advancing cooperation between nations and promoting active international engagement by the United States. The files document the activities of the New York and Washington Offices of Carnegie Endowment for International Peace from 1910 until 1954, as well as the founding, administration, and activity of the Centre Europeen (CEIP Paris Office) and the work of the Carnegie Endowment in Europe in 1911-1940

Correspondence files of the Declaration of Atlantic Unity. The declarations which they issued are in the box of printed materials (No. 49)

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.

The collection consiste of correspondence, memoranda, reports, bulletins, clippings, photographs, awards, and printed material. The files, arranged by genre and topic and reflect her philanthropic and legislative work in the areas of health, specifically cancer, heart disease, and mental health. Her civic and legislative work is covered in detail, as well as her private interests and activities.