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.

A collection of letters and memorabilia of John William Burgess, his wife, Ruth Payne Jewett Burgess, his son Elisha Payne Jewett Burgess, his daughter-in-law, Annette Curnen Burgess, his grand-daughter, Ruth Payne Jewett Burgess, and the Burgess, Jewett, Payne, and Curnen families. The personal correspondence numbering 17 items, covers the period 1908 to 1927 mainly between John and Elisha Burgess. There are two letters of a social nature from Eleanor Roosevelt and Nicholas Murray Butler and one lengthy post card from George Bernard Shaw to Annette Curnen Burgess. Also, memorabilia including portraits, photographs, books, diplomas, and medals.

Correspondence, memoranda, photographs, documents, manuscripts, wire recordings, and printed materials dealing mostly with Russian War Relief, Inc. (The American Society for Russian Relief, Inc.), 1940-1954. There are some materials on the Institute of Pacific Relations and its investigation by the McCarran Committee in the early 1950s. Also, personal and family correspondence, photographs, and other memorabilia. Correspondents include Hugo L. Black, Henry Sloane Coffin, Andrei Gromyko, John Hersey, Eleanor Roosevelt, and Arnold Toynbee.

Correspondence, manuscripts, documents, memoranda, notes, reports, photographs and printed materials. The Klachko papers are almost entirely made up of her research notes for her biography of Admiral Benson. The material covers all aspects of his life, including his early naval career, his tenure as Chief of Naval Operations, and his Chairing of the U.S. Shipping Board. The catalogued correspondence are mainly replies to Klachkos̀ appeal for information about Benson, the naval and political milieu of early 20th century, and help to publish, review and edit her growing manuscript. Among the catalogued correspondence are: Norman Angell, Walter Lippmann, Edward House, and Eleanor Roosevelt. The catalogued manuscript is Klachkos̀ bio of Benson bound in 5 parts. It is interesting to note that her final manuscript draft is 1038 pages whereas the published biography merely numbers 268 pages. The rest of the collection is comprised of photos of Benson and other important naval and political figures of the time, and Klachkos̀ extensive research notes.

This collection documents the personal and political life of Herbert H. Lehman, who served as lieutenant governor, governor, and senator of New York, and as director-general of the United Nations Relief and Rehabilitation Administration.

Correspondence, manuscripts, documents, photographs, art works, memorabilia, and printed material created by and belonging to journalist, magazine editor, socialite, and social reformer Marie Mattingly Meloney (1878-1943). Meloney edited The Delineator, 1920-1926; the New York Herald Tribune Sunday Magazine, 1926-1934; and This Week magazine, 1934-1943.

The surviving editorial, production, and publicity files of Greenberg: Publisher. The Greenberg: Publisher library includes 462 titles published by the firm. Also, personal papers of Jacob Walter Greenberg consisting of letters, manuscripts, photographs, clippings, printed ephemera, and memorabilia. These are biographical in nature relating to Greenberg, his family, friends, business associates, authors, politicians, and other public figures. Among the letters are one each from public figures including Robert Benchley, Bennett Cerf, Fiorello La Guardia, and Eleanor Roosevelt.

Correspondence, manuscripts, notes, drafts of speeches, appointment books, subject files, documents, photographs, memorabilia and printed materials. There are notes from her lectures on Sociology at Adelphi College in 1911-1912; papers from 1912-1932, when Perkins served on the Commission for Safety and on the Industrial Commission of New York State; the main body of the material is from the period of her cabinet office, 1933-1945; and some items from her days on the Civil Service Commission, 1946-1953. Also included are personal and family papers.

The collection chiefly consists of Goldenweiser's American legal case files. There are also case files from his German years, and substantial materials on his research into the condition of Russian refugees and refugee problems in general in the 1930s. Much of the correspondence from the late 1930s and early 1940s concerns Jews in Germany and occupied Europe. Correspondents in the collection include Mark Aldanov, Abraham Cahan, Antal Dorati, Georgiĭ Florovskiĭ, Tatʹi︠a︡na Frank, Vladimir and Vera Nabokov, and Mikhail Karpovich; there are 1 or 2 items each from Dwight D. Eisenhower, Eleanor Roosevelt, Herbert Lehman, and Nikolaĭ Losskiĭ. Letters, manuscripts, and documents by Vera Nabokova contain considerable information on her and her husband's lives in Germany and in the United States. Many of the American case files concern (as does much of the Nabokova material) individual claims for reparations from Germany after World War II.

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.