The correspondence, research, and teaching files of French-American cultural historian and Columbia University professor emeritus Jacques Barzun (1907-2012).

Correspondence with friends and patients, manuscripts and printed copies of Taft's many scholarly articles, notes for the courses which she taught, and case histories of some of her patients. Correspondents include James R. Angell, Ruth Benedict, and Karen Horney.

John Leonard (1939 -2008) was an American literary and cultural critic best known for his extensive writing on literature, television, media, politics and American culture and his work as head editor of The New York Times Book Review in the 1970s. The John Leonard papers include drafts of Leonard's reviews, essays, essay collections, and works of fiction and nonfiction. The collection also includes his correspondence with prominent literary and cultural figures, his research and business files, personal memorabilia, photographs, signed artwork, printed matter, posthumous tributes to Leonard, and audio-visual material.

Personal papers of John Lord O'Brian, prominent lawyer and public servant, including correspondence, speeches, notes, legal opinions and records, articles.

The Juan J. Linz papers contain correspondence, personal documents, awards, photographs, notes, writings, speeches, lectures and courses notes, research files, press coverage and interviews, and printed material, dating from 1920s to 2010. The materials also include one box of materials on Columbia Student Unrest in 1968. The collection provide an insight on Juan J. Linz's family and childhood as well as his education and his work as a political scientist and a professor.

Collection consists of correspondence, manuscripts, documents, photographs, maps, and printed materials, mostly dealing with Gulḱevich's service in the Ministry of Foreign Affairs. Cataloged correspondents are Roman Gul,́ Ekaterina Kuskova (over 200 letters), Sergeĭ Prokopovich, and Petr Savit︠s︡kiĭ. Manuscripts are reports on Turkey, Armenia and Panislamism. Documents and awards are from the Ministry of Foreign Affairs and foreign governments. Printed materials consist of clippings and also printed circulars of the Ministry of Foreign Affairs dating from 1886-1896.

Correspondence, notes, manuscripts, documents, photographs, audio tapes, and printed material of Louis G. Cowan. The files document Cowan's activites at CBS and Brandeis University, and in many other capacities. Approximately one-third of the collection consists of records and studies of the Broadcast Institute of North America. The papers also reflect a number of Cowan's various interests such as posters; the earliest item in the collection, a letter from General Charles P. Stone, 1885, is indicative of Cowan's active interest in the history of the Statue of Liberty. Among the prominent correspondents are Jacob Bronowski, Hubert H. Humphrey, William Phillips, and Jonas Salk.

The collection includes correspondence, reports, and printed material relating to Folsom's career in business and government. Subjects include creation, passage, and implementation of the Social Security Act of 1935 and amendments to it; unemployment insurance plan of Eastman Kodak Company, 1920's and '30's; Rochester Civic Plan on Unemployment, 1930-34; New York State Advisory Council on Placement and Unemployment Insurance. Also U.S. House of Representatives Special Committee on Postwar Economic Policy and Planning (Colmer Committee), dealing with reconstruction in Europe, 1944-46; National Advisory Board on Mobilization Policy, 1950-53; U.S. Treasury Department, with emphasis on taxation and social insurance, 1953-55. Additional subjects are Committee for Economic Development, and its Committee for Improvement of Management in Government, whose report on presidential succession resulted in a constitutional amendment; and other advisory councils, commissions, and conferences. Other material relates to University of Rochester, calendar reform, and higher education in New York State and in the South. There is correspondence with Dwight D. Eisenhower, Kenneth B. Keating, Oveta Culp Hobby, Nelson A. Rockefeller, and Lyndon B. Johnson; a transcript of an interview with Josef Stalin, 1945; and Folsom's scrapbooks and speeches.

The collection consiste of correspondence, memoranda, reports, bulletins, clippings, photographs, awards, and printed material. The files, arranged by genre and topic and reflect her philanthropic and legislative work in the areas of health, specifically cancer, heart disease, and mental health. Her civic and legislative work is covered in detail, as well as her private interests and activities.

Personal and professional correspondence, including 25 long letters from Professor Henry F. Herbig; manuscripts (mainly speeches); specifications for patents in electrical fields; technical and personal photographs; and memorabilia. Included is a copy of the famous "shot in hand" x-ray photograph, ca. 1896, one of the first ever to be taken. This collection also contains the correspondence, manuscripts, documents, and memorabilia of Professor Pupin's daughter, Varvara Smith, and his son-in-law, Louis Graham Smith. His daughter's letters and documents deal with her financial difficulties, her administration of Pupin's estate and her claims against Columbia University. Louis G. Smith's letters deal with his anti-Communist sentiments and his manuscripts are mainly ideas for popular songs and plays. There are three letters (photostatic copies) to Smith from Dwight D. Eisenhower.