Correspondence, memoranda, reports, etc.

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

This collection includes nine letters of Ralph Waldo Emerson as well as letters of Louis Agassiz, Amos Bronson Alcott, Oliver Wendell Holmes, Sr., Henry Wadsworth Longfellow, James Russell Lowell, John Lothrop Motley, Charles Sumner, and John Greenleaf Whittier. In addition, there are two incomplete manuscripts by Emerson and one document from the Liverpool Custom-house signed by Nathaniel Hawthorne as Consul for the United States. The collection also includes the corrected typescript, index, and page and galley proofs for Thomas Franklin Currier, A BIBLIOGRAPHY OF OLIVER WENDELL HOLMES (New York, 1953) which was edited by Professor Tilton. Also, some early correspondence and photographs of the Tilton family and friends. There are letters from the actors Annie Louise Ames, Richard J. Dillon, and Hans L. Meery to Tilton's grandfather, Bernard Paul Verne, as well as photographs, tintypes, and daguerreotypes of the Verne family and friends.

The office files of the American Institute of Pacific Relations and the international Institute of Pacific Relations, containing correspondence and reports concerned with international conferences, research programs, and publications programs of both Institutes, and relating to the political, economic, and social problems in eastern and southern Asia and the South Pacific, as well as with problems of American foreign policy. There are many travel letters and on-the-spot reports relating to conditions in China, Japan, Russia, Australia, the Philippines, India, and Pakistan during the period 1933 to 1954.

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

The incomplete records of the New York State Library School, Albany, 1890-1911. Included are diploma lists, grade sheets, examination questions, examination questions with corresponding set of students' answers, pass cards, senior certificate lists, an admissions application, entrance examinations, curriculum materials, and some documents for the class of 1890. Also, records of the New York State Library School Association, Incorporated. In addition to letters from such prominent American librarians as Katharine L. Sharp, Joseph Wheeler, Ralph Munn, and James I. Wyer, there are minutes, reports, memoranda, and printed documents, including the Association's constitution. There is a scrapbook of blanks and forms used in the executive departments of U.S. libraries in 1893, mounted by the N.Y. State Library School for the American Library Association World's Columbian Exposition Comparative Library Exhibit (Chicago, 1893). Also, files of the school consisting of course materials, exams, publications of the School, student records, admission files, class lists and rankings, and some related correspondence.

The collection consists of (1) A group of early materials written between 1903-1905, before Rank met Freud. This includes 4 daybooks, a notebook of dreams, a notebook of poems, the manuscripts of "Der Kunstler;" (2) Correspondence between Freud and Rank between 1906-1924, including the controversy over THE TRAUMA OF BIRTH. 40 a.l.s. from Freud and typed copies from Rank, with a few letters to and from Ferenczi (3) Copies and some originals of the circular letters by members of the inner circle, Ernest Jones, Abraham, Eitingon, Ferenczi, Rank and Freud, 1920-1924 (4) Original handwritten manuscripts, typed copies, notes and corrections of Rank's major works (5) Rank's own listing and comments on his writings and publications (to 1930) (6) Rank's published works--20 titles.