Correspondence, subject files, manuscripts and printed materials documenting the work of C. Martin Wilbur, George Sansom Professor Emeritus of Chinese History, Columbia University. Correspondence with non-Columbia organizations includes the Institute of Pacific Relations, Far Eastern Association, INDUSCO, Council on Foreign Relations, Asia Foundation, and American Council of Learned Societies, among others. Subject files relevant to Columbia University include items pertaining to the Department of Chinese and Japanese, later renamed the Department of East Asian Languages and Cultures, as well as teaching files, student files and research projects directed. The manuscript files contain the notes and, in some cases, printed copies of published and unpublished works and public talks. Wilbur's writings and research concentrate on the history and politics of twentieth century China, with emphasis on the Chinese Revolution, 1920-1929, Sun Yat-sen, and communism in China. There are translations of minutes for the first and second Kuomintang Congresses, copies of documents from the Kuomintang Archives, and photographs of members of the Young China Party, Sun Yat-sen and several historical events in the 1920s. Files on fund raising efforts for the Department of East Asian Languages and Cultures and the Wellington Koo Fellowship also contain relevant correspondence. Biographical information includes a curriculum vitae (ca. 1968)

Professional and personal files including Armstrong's correspondence with professional associations, other engineers, and friends, his research notes, circuit diagrams, lectures, articles, legal papers, and other related materials. Of his many inventions and developments, the most important are: 1) the regenerative or feedback circuit, 1912, the first amplified radio reception, 2) the superheterodyne circuit, 1918, the basis of modern radio and radar, 3) superregeneration, 1922, a very simple, high-power receiver now used in emergency mobile service, and 4) frequency modulation - FM, 1933, static-free radio reception of high fidelity. More than half the files concern his many lawsuits, primarily with Radio Corporation of America, over infringement of the Armstrong patents. Litigation continued until 1967. Other files deal with his work in the Marcellus Hartley Research Laboratory at Columbia University, 1913-1935, and with the American Expeditionary Forces in France during World War I, his Air Force contracts for communications development, Army research during World War II, the Radio Club of America, the Institute of Radio Engineers, FM development at his radio station at Alpine, N.J., the use of FM in television, his involvement in Federal Communications Commission hearings and legislation, and his work with the Zenith Radio Corporation. Also, letters to H.J. Round

Correspondence, manuscripts, notes, notebooks, documents, photographs, course-related materials, and printed materials. The manuscripts include typescripts of Sykes' published and unpublished novels, monographs, plays, short stories, and articles. Among these are The Perennial Avant Garde, The Cool Millennium, and The Hidden Remnant. Sykes' notes and notebooks span the period from the early 1930s to 1980, and include preliminary ideas and sketches for his books, as well as autobiographical material. A small number of documents concern Sykes' wartime work in the U.S. Government Office of War Information. Course-related material including writings and correspondence of students taught by Sykes between 1962 and 1975 at the New School and as an adjunct professor at Columbia University. Printed materials consist of numerous reviews of Sykes' books, in addition to offprints and articles by Sykes. Included as well are printed materials about or connected with Sykes, offprints of articles inscribed to him, and many volumes from his library. The substantial correspondence series includes personal letters and correspondence with agents and publishers relating to his books. Correspondents include Harold Clurman, Aaron Copland, Lawrence Durrell, Georgia O'Keeffe, and Francis Steegmuller, as well as a number of Sykes' students. There is extensive correspondence between Sykes and the artist John Hartell from 1927 to 1983.

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

Correspondence, research notes, articles, clippings, photostats, and photographs. These files concern his interest in Pierre Bayle, Antoine Arlier, and the Renaissance in Provence, as well as the Romanic Review, philology, French, Spanish, and celtic studies. Among the correspondents are: Philippe Berthelot, Nicholas Murray Butler, F.R. Coudert, John H. Finley, the Prince de Ligne, Curtis Hidden Page, William B. Parsons, and Aime ́Puech.

Correspondence, manuscripts, notes, documents, book typescripts, photographs, and printed materials covering the time from Dorfman's early interest, as a graduate student, in the economic thought of Thorstein Veblen until his retirement. There is correspondence with his academic colleagues, students, publishers, and the family and students of Thorstein Veblen, as well as manuscripts, typescripts, drafts, revisions, notes, photographs, pamphlets, and related materials for his articles and books which include: THORSTEIN VEBLEN AND HIS AMERICA, 1934; THE ECONOMIC MIND IN AMERICAN CIVILIZATION, 1946-1959; EARLY AMERICAN POLICY, 1960; INSTITUTIONAL ECONOMICS, 1963; TYPES OF ECONOMIC THEORY, 1967; and NEW LIGHT ON VEBLEN, 1973

Correspondence, manuscripts, documents, notes, notecards, journals, diaries, photographs, slides, memorabilia and printed materials documenting Goodrich's career in the field of Chinese language and history, as well as materials on the cultural affairs of twentieth century China. Among the cataloged correspondence are Joseph Alsop, Pearl S. Buck, Norman Cousins, Philip C. Jessup, H.H. Kung, Owen Lattimore, and Nathan Pusey. Part of the collection is arranged in Goodrich's alphabetical subject/name file and the remainder is arranged alphabetically. The correspondence is from colleagues, students, business associates, friends, etc. The subject files are on a variety of topics concerning China, the Far East, printing, medicine, the arts, and technology; material on the Chinese Civil Service Examination; associations, schools, foundations, missions and their work in the Far East.

A small group of letters, manuscripts, notes, notebooks, a diary, a document, and 43 books from his library of French literature, 32 of which are signed and inscribed to him by the author.

Correspondence, manuscripts, notes, technical reports, memoranda, questionnaires, interview schedules, personal and professional documents, several photographs, one tape recording, and printed materials. The correspondence files contain letters to colleagues and researchers such as Bernard Berelson, Robert Lynd, Robert Merton, and Frank Stanton. The subject files document Lazarsfeld's many research projects such as the Admissions Officers Project, 1964-1970, the Planning Project for Advanced Training in Social Research, 1950-1955, and his first major endeavor, the Princeton Radio Research Project, 1937-1940. There are complete records for his 1954-1955 study on McCarthyism's effect on college teaching. These original materials consisting of correspondence, interview schedules, and questionnaires contain many detailed comments which could not be included in the published version of this study, THE ACADEMIC MIND (1958). Numerous files relate to Lazarsfeld's position as Associate Director of the Bureau of Applied Social Research (BASR). There are manuscripts of books, research papers, lectures, and articles by Lazarsfeld as well as by his students and colleagues.

Professional and personal papers of the German émigré scholar Paul Oskar Kristeller. Kristeller was a professor of philosophy at Columbia University and a world renowned scholar of Renaissance humanism and Renaissance philosophy who published widely, notably his major catalog of uncataloged manuscripts from the Italian Renaissance, the Iter Italicum.