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Minutes, correspondence, annual reports, press releases, financial records, photographs, memorabilia, audiovisual, digital and printed materials document the philanthropic activities and administration of the Carnegie Corporation of New York. The collection is actively growing, primarily through regular document transfers from the Carnegie Corporation of New York. Andrew Carnegie's biographical information and personal philanthropic activity can be found in Series VII. In addition, his pre-1911 gifts, most notably his donations for libraries and church organs, can be found on microfilm (Series II), in the Home Trust Company Records (VI.A), and Financial Record Books (I.C.1). Grant files (Series III.A), which comprise the bulk of the collection) provide information on projects and institutions founded, endowed or supported by the Corporation. The Special Initiatives series (Series IV) contains the records of task forces, commissions and councils, formed by the Corporation mostly during the 1970s, 1980s, and 1990s to address specific issues. The Corporation's records include those of other Carnegie philanthropic organizations (Series VI), including the Carnegie Foundation for the Advancement of Teaching and the Home Trust Company, both of which shared staff, officers, and office space with the Corporation for a period of time.

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

With the exception of letters to John Dewey, George Rives, G. Stanley Hall and some original incoming correspondence, the papers of James McKeen Cattell consist of typescript copies of correspondence with Seth Low, Nicholas Murray Butler, and faculty members, dealing with Psychology Dept. matters, professional matters, and Cattell's battle for academic freedom which ended in his dismissal from and subsequent suit against Columbia. Included are typescript copies of University reports, printed court records, and transcripts of correspondence with Cattell's lawyers.

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, photographs and printed materials. The correspondence is with American and English literary figures and Columbia faculty members. Included are 38 letters from Brander Matthews and 4 from Edmund Gosse. There are 5 letters from Trent to George Whicher, 3 to John Hart, and 180 postcards and letters to John Bell Henneman, as well as a group of miscellaneous letters to and from Trent. Also included are a holograph fair copy of Trent's poem "Germany, 1915" with his covering a.l.s. and several miscellaneous poems; and his contract with J.B. Lippincott Co. for the publication of GEORGE SAND. There are also two documents signed by George W. Maynard. Among the photographs is a photograph album, prepared by Hudson Stuck in 1899, of people and scenes from Dallas, Texas. Among the printed materials are Trent's examinations and outlines for English courses, and THE UNPOPULAR REVIEW with numerous pages of Trent's notes