Correspondence, minutes of meetings, financial records, publications, notes, subject files, awards, speeches, reports and audiovisual materials document work by the Church Peace Union, its successors Council on Religion in International Affairs and Council on Ethics and International Affairs, and related organizations such as the World Alliance for International Friendship Through the Churches. The first installment of the CCEIA archival materials came to the RBML in 1974, with numerous additions over the years. A major addition in 1982 contained primarily the records of the Board of Directors and their semi-annual meetings, as well as the various programs and institutes of the Council, for the years 1972-1982, along with selected 1930s materials. 1986 addition contains presidential correspondence files, minutes of the Board of Trustees and committees, special projects, programs and conferences files, and the business and editorial files of "Worldview". Correspondents include John Foster Dulles, Jane Addams, Fiorello La Guardia, and Paul Tillich. 1990 and 2000 additions includes files of CCEIA presidents and vice presidents, paper and audiovisual materials on Merrill House Conversation Programs; Educational programs; International Monetary Fund/Lecture series; The Annals Of The Academy Of Political & Social Science; Washington Consultations; Colloquia for the Clergy; Church State Project; Asian Development & The Carribean Initiative; Korea: Year 2000 Project; fundraising files, printed materials and files of the Department of Publications.

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

An artificial collection of phonograph records, reels of audio tape recordings, and motion picture films recording a variety of Columbia University academic and extra-curricular activities and events such as lectures; speeches, some at award ceremonies; commencement; installation of Nicholas M. Butler and Dwight D. Eisenhower as presidents of the university; King George VI of England during his visit, 1939; speech of England's Queen Mother, Elizabeth in 1954; homecoming; football, the band; academic and alumni conferences; and radio programs under the auspices of Columbia. Many of the recordings are of Eisenhower. Other prominent personalities include John Foster Dulles, Herbert Hoover, Isidor Rabi, Eleanor Roosevelt, John R. Dunning, and the Shah of Iran.

Professional and personal files including Armstrong's correspondence with professional associations, other engineers, and friends, his research notes, circuit diagrams, lectures, articles, legal papers, and other related materials. Of his many inventions and developments, the most important are: 1) the regenerative or feedback circuit, 1912, the first amplified radio reception, 2) the superheterodyne circuit, 1918, the basis of modern radio and radar, 3) superregeneration, 1922, a very simple, high-power receiver now used in emergency mobile service, and 4) frequency modulation - FM, 1933, static-free radio reception of high fidelity. More than half the files concern his many lawsuits, primarily with Radio Corporation of America, over infringement of the Armstrong patents. Litigation continued until 1967. Other files deal with his work in the Marcellus Hartley Research Laboratory at Columbia University, 1913-1935, and with the American Expeditionary Forces in France during World War I, his Air Force contracts for communications development, Army research during World War II, the Radio Club of America, the Institute of Radio Engineers, FM development at his radio station at Alpine, N.J., the use of FM in television, his involvement in Federal Communications Commission hearings and legislation, and his work with the Zenith Radio Corporation. Also, letters to H.J. Round

Belmont (1878-1979) was an American actress and a prominent public figure. The collection includes correspondence, subject files, and personal materials.

Correspondence; manuscripts of books, chapters, addresses, lectures, articles, and other writings; clippings and other printed materials relating to Butler's life and career, and memorabilia, ca. 1900-1947. Also, correspondence, 1891-1946, between Butler and presidents of the United States including William McKinley, Theodore Roosevelt, William Howard Taft, Woodrow Wilson, Warren G. Harding, Calvin Coolidge, Herbert Hoover, Franklin D. Roosevelt, and Harry S. Truman.