The collection was originally housed in several filing cabinets in and near Miwa Kai's office space in Kent Hall, which she shared with Wm. Theodore de Bary. Kai kept well-organized files, and most of her original file names have been retained. In addition to the papers she collected and created through the course of her work and personal life, she also inherited papers created by Howard P. Linton and Ryusaku Tsunoda, which she incorporated into her own files and enhanced with supplementary material and her own hand-written notes.

The Ta-Chun Hsu papers (徐大春檔案) document his personal life and provide a glimpse of his career in China and in the United States. The bulk of the papers consist of correspondence related to his family and his personal life as a Chinese-American and an immigrant living in New York. The correspondence also highlights his relation to a prominent Chinese educator and philosopher, Hu Shih (胡適) and his family. There are also materials related to his father, Hsu Singloh (徐新六), who was a major finance and banking leader during the Second Sino-Japanese War. Also included are immigration and travel documents of T.C. Hsu. Other materials also include news clippings, articles, financial records, printed materials, portraits and photographs, maps and postcards.

The Collection of China's spring 1989 democracy movement (六四前后中国民主运动资料汇集) documents the legacy of the democracy movement in China during 1989 as well as events leading up to the Tiananmen Square Incident and its aftermath, dating from 1988 to 1997, and with the bulk of the materials dating from 1989 to 1990. The collection holds the originals and the photocopies of over 300 ephemeral posters, leaflet/handbills, newsletters, open letters, and petitions created and distributed in 1989, including those issued by the Peking Workers Autonomous Association (北京工人自治联合会), student groups from various universities, the "Hunger Strike Newsletter" and other unofficial news bulletins, intellectuals' petitions to the government, cartoons, and poetry. The collection also comprises over 200 photographs depicting demonstration banners, big character posters, petitions and letters to the leaders. The collection also contains 15 eye-witness reports by Asians and Westerners, reports of human rights organizations, as well as books, miscellaneous news magazine articles and newspaper clippings. Related materials in the collection also include Spring 1989 issues of the banned intellectuals' journal "Eastern Record"; 147 slides of work shown at the Peking National Gallery's avant-garde exhibition; and a video tape of interviews with artists and performance art at the February 5, 1989 opening of that exhibition. Other items are several VHS, audiocassettes, floppy disks, fragments of wall posters, a T-shirt, and commemorative envelopes. A large fabric banner prepared by Chinese students at the University of Michigan which was sent to Peking where it was displayed at Tiananmen Square in May 1989 and later returned to the U.S., is also included in the collection.

Beginning in the late 1970s, Columbia students urged the university to divest from companies doing business in South Africa in protest of South Africa's system of apartheid. After a series of student protests culminating in a month long blockade of Hamilton Hall in 1985, the Trustees voted to begin full divestment. The collection contains the administrative records of this decision making process in the 1970s-1980s.

The Richard Brick and Geri Ashur collection consists of materials related to film productions created and collected by Richard Brick and Geri Ashur, dating from 1968 to 2014. The materials document the career of Richard Brick as a filming professor, producer, and the first commissioner of the Mayor's Office of Film, Theatre and Broadcasting (MOFTB). The collection also includes materials related to films by Geri Ashur. The bulk of the collection focuses on the motion picture films and production files of the films Richard Brick and Geri Ashur produced, as well as the administrative records that document Richard Brick's contribution to the filming industry in New York during his tenure as the commissioner of the Mayor's Office of Film, Theatre and Broadcasting (MOFTB).

Records of the University Senate, a governing body established by Columbia in 1969, consisting primarily of minutes, correspondence, reports, meeting agendas, and resolutions concerning various campus and academic issues. The records date primarily from 1969 to 2004 and are organized by committee or subcommittee and then arranged chronologically.

Marable was a leading figure in African-American studies as well as a historian, social theorist, and political activist. The collection includes appointment books, biographical information, budgets, clippings, correspondence, drafts, lecture notes, manuscripts, photographs, proposals, reports, speeches, syllabi, and teaching materials.

The Interfaith Center on Corporate Responsibility (ICCR) is a coalition of predominantly faith based institutions that are committed to socially responsible investing. The strength of the records lies in their documentation of the ICCR's programs, its work on individual issues, and its work with individual corporations and the U.S. Security and Exchanges Commission (SEC).

A collection of over 340 pieces of original material related to the demonstrations at Columbia University and their after-math, focused on actvities led by the Columbia Students for a Democratic Society (Columbia SDS) to protest the Vietnam War, end the construction of a Columbia gymnasium on public park land in Harlem, and include University students in institutional decision-making. Most items date to the spring and fall of 1968, including newspaper and magazine clippings, flyers for protests and demonstrations, letters, leaflets, journal and newspaper issues, essays, notices, press releases, memos, meeting minutes, proposals, and many other items, all collected and archived by Stuart Gedal, a student at Columbia and prominent SDS member.

Established in 1965 by Columbia University, the Double Discovery Center (DDC) provides educational programs and services to low income and first generation college-bound junior high and high school students in New York City. The DDC is one of the oldest Upward Bound programs in the United States. The collection contains the records of the DDC from 1965 to 2005, including student files and materials documenting the DDC's primary programs, Upward Bound and Talent Search.