The Theodore Richards Conant Collection documents the life and film making career of Theodore Richards Conant, dating from 1949 to 2010, with the bulk of the materials dating from 1953 to 2000. The focus of the materials is on the Korean War, Korean culture and society. Materials in the collection consist of his personal papers and a substantial amount of audiovisual materials related to the documentary films created and/or collected by him during his career. The personal papers consist of clippings, ephemera, correspondence, scenarios, notes, catalogs, journals and other unique items. The photographs in the collection document Korea's political and cultural aspect, as well as Conant's work in Korea as a film producer while working in the UN Korean Reconstruction Agency (UNKRA). The audiovisual materials are the documentaries directed and filmed by Conant, related to the Korean War, Korean society and culture.

Thomas Whiteside was an American journalist born in 1918. Whiteside wrote for The New Yorker for over 45 years. He covered such topics in his articles and books as cable television, the cigarette industry, the channel tunnel, chemical weapons (notably 2, 4, 5-T, a component of Agent Orange), Ralph Nader, Stig Wennerstrom, and yellow rain. It has been said that Whiteside's work on Agent Orange led directly to the congressional hearings which discussed the dangers of the substance. By the end of the hearings, the Surgeon General of the United States had announced restrictions on the use of the herbicide. The collection contains material related to the articles that Whiteside contributed to The New Yorker. The files include audiocassettes, book reviews, correspondence, drafts, galleys, notebooks and notes, research files, and typescripts. There is a small section of the collection that contains personal papers not tied directly to specific articles or books. The material ranges in date from the 1950s to the 1990s, spanning the time Whiteside worked at The New Yorker.

The collection consists of correspondence, manuscripts, documents, photographs, subject files and printed material. The correspondence is primarily from the 1920s and includes letters from G. E. Lv́ov and S. P. Mel'gunov and one or two items each from M. A. Aldanov, I. A. Bunin, N. V. Chaikovskii, A. L. Tolstaiia, V. F. Zeeler and others. The manuscripts are primarily in the form of notes in Polner's hand and include Polner's diary from the years 1919-1925. The documents belong to Tikhon Polner's brother, Sergei, and deal with the latter's expulsion from the USSR in 1921. There is extensive material in the subject files on the writings of Lev Tolstoĭ, including typescript copies of several Tolstoi manuscripts and clippings of the reviews of Polner's book on Tolstoi. Also included is a photograph of A. I. Herzen from the 1850s.

The collection contains correspondence, manuscripts by Marchenko and others, documents, photographs, printed materials, notebooks, notes, and subject files. Correspondence consists of Marchenko's personal correspondence and the correspondence of the Kronstadt Group, an anti-communist emigre organization. Manuscripts consist mostly of articles by Marchenko on the economy of the Soviet Union, many of them published. Printed materials include mimeographed materials, pamphlets, clippings, maps, and copies of several anti-Communist periodicals. Marchenko's notes and notebooks cover topics on economics, the Soviet Union and the Russian language. Subject files include information on the Institute for the Study of the U.S.S.R. (Munich) and the Kronstadt Group.

The V. K. Wellington Koo papers document the diplomatic legacy of Wellington Koo as a Chinese statesman and diplomat of the 20th Century. The papers primarily consist of materials collected during Koo's diplomatic career, relating to the Lytton Commission, 1932-1933; the League of Nations, 1931-1940; the United Nations, 1944-1946; his ambassadorships to France, 1932-1941; to Britain, 1941-1946; to the United States, 1946-1956; as the Senior Advisor to the Republic of China from 1956; and as the Judge on the International Court of Justice, 1957-1966. The materials include correspondence, diaries, memoranda, manuscripts, documents, notes, speeches, maps, photographs, printed material, and audio visual material. The bulk of the materials emphasizes China's domestic and foreign affairs, such as the Sino-Japanese conflict, World War II and the Cold War in the Far East region, as well as the League of Nations and the United Nations.

The collection consists of manuscripts by Sekara and printed materials. The manuscripts primarily deal with Sekara's military career during the Civil War. There is a copy of "Sumskie gusary 1651-1951" (Buenos Aires, 1954) to which various clippings and notes have been appended. In addition, there are a few dozen issues of the journals "The Sentinel" and "Voennai︠a︡ byl ́(The Military Past) dating from the 1950s to 1974.

The Wallace K. Harrison architectural drawings and papers consists of architectural drawings, photographs, correspondence, notes, speeches, manuscripts, press releases, clippings, memoranda, printed material, job lists, curriculam vitae, contracts, articles, and other material related to Harrison's architectural projects. The collection also contains a significant amount of material regarding Harrison's position as director of the Office of Inter-American Affairs, director of planning of the United Nations Headquarters and biographical material. Approximately a third of the collection is made up of photographs. Photographers include Wendy Barrows, Shirley Burden, George Cserna, Y[uzo] Nagata, and Ezra Stoller, among many others. There is also a collection of 148 art books that belonged to Harrison referred to as his "doodle books." A list of these books with brief descriptions of where Harrison drew in them is contained in the finding aid. Projects documented include Lincoln Center, Metropolitan Opera House, Rockefeller Center, Albany Mall (Empire State Plaza), United Nations, X City, ALCOA building, Corning Glass building, First Presbyterian Church, La Guardia Airport, Socony-Mobil building, Battery Park City, Radio City Music Hall, New York World's Fair (1939 and 1964), Institute for Advanced Study, National Academy of Science, Pahlavi National Library Competition, Oberlin College's Hall Auditorium, Pershing Memorial, Rockefeller University, Hopkins Center, The Anchorage, Avila Hotel, and numerous other buildings and residences.