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.

Correspondence, incoming and outgoing; certificates; contracts; family trees; notebooks; notes, books; magazines; and pamphlets. Material pulled from the papers of various members of the Hyatt and Mayor families, especially those of Audella Hyatt and Harriet Hyatt Mayor.

Notes, videos and films relating to Geraldo Rivera's 1972 exposé of conditions at Staten Island's Willowbrook State School.

Correspondence, handwritten notes, and court exhibits relating to a labor dispute between the Southeastern Express Company and its employees, primarily the Brotherhood of Railway, Airline, and Steamship Clerks, Freight Handlers, Express, and Station Employees

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.

Papers of the American theologian, Unitarian Universalist, Professor of Religion. Predominately correspondence, the remainder of the collection consists of financial records, photographs, printed material, and writings including examinations, notes, and a typescript of the translation of Ernst Troeltsch's Historism and Its Problems, First Book: The Logical Problem of the Philosophy of History (Tübingen, Germany, 1925).

One page, handwritten, headed "The several Currencies of the United States compared with Dolars [sic] & Cents," listing information for fifteen states

Records of International Association for Continuing Education and Training (IACET) include commission files, board of director's membership lists, conference proceedings, IACET board of director's minutes, and other material.

Scripts and production notes for the television drama NYPD Blue

The Matthew Cox Papers contain materials from his work on the book Their Darkest Day: The Tragedy of Pan Am 103 and Its Legacy of Hope, co-authored with Tom Foster. These materials include mostly Research Files pertaining to Subjects and People and accompanied by the author's handwritten notes. Other series include Chapter Notes, Clippings, and Multimedia.