Correspondence, manuscripts, photographs, memorabilia, and printed materials concerning Berg's lifelong interest in and work for his alma mater. Berg served the University in many capacities such as vice-president and president of the Alumni Association of Columbia College, 1954-1958, and member of the board of directors of the Alumni Federation of Columbia University, 1946-1958. The correspondence deals chiefly with alumni affairs; some of the major correspondents include Harry J. Carman, Lawrence Chamberlain, Frank S. Hogan, Mr & Mrs Richard Rodgers, and Arthur Hays Sulzberger. Among the photographs are two signed by Dwight D. Eisenhower. Also included is a typescript memoir of Berg's three years as a student in the Columbia School of Law (1927). Berg collaborated with three other students on this memoir. Aaron Berg's correspondence with Dwight D. Eisenhower is at the Eisenhower Library. Also included are literary autographs and manuscripts purchased on the Aaron Berg Fund.

Central Files is composed chiefly of correspondence sent and received between Columbia University administrators and other University officers, faculty, and trustees, as well as correspondence sent and received between University administrators and individuals and organizations from outside the university.

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.

A collection of personal papers of Elizabeth (Betty) Blake, who was very active in both the Columbia and broader Manhattan communities, consisting primarily of correspondence, meeting agendas, minutes, and Columbia University memorabilia.

Correspondence, manuscripts, notes, documents, subject files, photographs, art works, and printed materials. This collection covers the entire span of his life, although by far the greatest part relates to his activities as a professor from the 1930s to the 1960s. Among the correspondents are many important figures in American Russian studies or Columbia University; there are also many letters from his wife, Clemens T. Robinson, and Lewis Mumford. Manuscripts by Robinson include his "Rural Russia under the Old Regime" lectures, notes, speeches and essays, and also miscellaneous pieces (essays, reviews, poems, stories, plays, etc.) that he wrote while he was an aspiring young journalist and writer in the 1910s and 1920s. Manuscripts by others consist of student theses, papers, books and reports that were given him for review or comment. Subject files deal with such topics as his service in World War I; Columbia University (especially the Libraries and the History Department); and various aspects of academic life and Russian studies. Almost nothing in the collection has any bearing on his government service during World War II; items from the war years concern personal affairs or scholarship. There are photographs of Robinson and his wife; family photographs from the late 19th and early 20th centuries; and Russian scenes. Art works include items by Clemens T. Robinson. Among the printed materials are two books inscribed by Mumford to Robinson.

The materials that comprise the Historical Biographical Files have been collected and added to from a variety of sources over the years by current and previous staff. The files consist of materials related to people who have a connection to the University whether as student, alumni, administrator, faculty, staff, guest lecturer, or honorary degree recipient. Materials generally consist of newspaper and magazine clippings, press releases, programs, ephemera, printed matter, lists, reports, and pamphlets.

The Historical Photo Collection contains images of persons, events, and activities associated with Columbia College (1754-1896) and Columbia University (1896-).

The bulk of the collection relates to awards, honorary degrees, and other honors bestowed on I. I. Rabi during the latter half of his career. It contains correspondence, manuscript drafts, pamphlets, lectures, articles, interviews, reports, panel discussions, transcripts, books, and conference materials about Rabi's work. Includes photographs, VHS recordings, audiocassettes, scrapbooks, and press clippings related to his career. Subjects include science, atomic energy and weapons, peace, education, NATO, history, government, world affairs, and honors. Also includes awards, honorary degrees, certificates, medals, and other memorabilia. In addition, correspondence regarding his estate, the awards established in his honor, and related memorials. These were the materials that I.I. Rabi's widow, Helen Newmark Rabi, did not donate to the Library of Congress but kept as her own mementos.

The Morningside Area Alliance is an organization working for community improvement on behalf of its member institutions in the Morningside Heights neighborhood in New York City. The organization was founded as Morningside Heights Inc. in 1947 through joint action of fourteen Morningside Institutions--Columbia University, St. Luke's Hospital, Cathedral Church of St. John the Divine, Teacher's College, Barnard College, Corpus Christi Church, Home for Old Men and Aged Couples, International House, Jewish Theological Seminary, Juilliard School of Music, St. Hilda's and St. Hugh's School, The Riverside Church, Union Theological Seminary, and the Women's Hospital of St. Luke's Center--with the expressed purpose of "[promoting] the improvement of Morningside Heights as an attractive, residential, educational, and cultural area." The collection includes much, if not all, of the material that was created by the organization as part of its daily business from 1947 to 1992, when the materials were accessioned into University Archives at Columbia University. This includes records of the Board of Directors and the various Committees within the Alliance; assorted publications, reports, pamphlets, and theses both acquired and created by the organization; files of the different offices within the organization; maps, plans, and photographs used and created by the Alliance for its work; and the collected materials and files created for the organization's projects in different subject areas--specifically buildings, community services and programs, public safety, schools, and the Morningside General Neighborhood Renewal Plan. The collection also includes a large quantity of material rearranged into subject files on different areas of concern within the organization.

This collections contants the administrative papers from 1950 to 1970s, which document the establishment of the Assembly and how it operated in the framework of Columbia University and its Business School. It also includes the volumes created for each Assembly topic and meeting year. The volumes contain both original manuscript material (e.g., correspondence, memos, reports, photographs, programs, etc.) related to the planning and execution of each meeting as well as published reports and publications generated for the meeting. Topics addressed by the Assembly over the years include: US Foreign Policy, Outer Space, Nuclear/Atom Power, International Relations, Collapse of the USSR, Arms Control, US Economy, Domestic policy issues (health insurance, labor, black economic development), Religion and American Life, Social Issues, Arts and Public Policy, Environmental issues, Politics, Tax System, Financial Systems, World Migration and US Policy. The collection also includes The Assembly's publications and a participant index.