Search

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 and documents. Included among his personal and professional correspondence are letters from famous economists collected by Seligman. Among these are: I) William Shirley (Box 95). 1741-1745. Copies of letters and documents by Shirley, Royal Governor of Massachusetts, addressed chiefly to the Board of Trade, London; II) Paul Flobart (Box 96). RECHERCHES SUR LES BILLETS DE LA BANQUE DE LAW, 1716-1720. Lille, 1920. Notes, page proof and printed for of this pamphlet; III) John Francis Bray Papers (Box 97). Bray, 1809-1895, early socialist writer and labor agitator in England, 1822, returned to America in 1842. Michigan experiences, 1842-1896, papers 1860-1890; IV) Ernest Jones Papers. Correspondence, family and business papers of Ernest Jones, 1819-1869, English militant socialist and leader of the Chartist movement, and publisher of two newspapers propagating Marxist doctrines. Collection consists of ca.1,708 items, and some family correspondence and mementoes. The most valuable part appears to be his notes refuting various libel charges brought against him. In 10 boxes at the end of the collection

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.

Notes and books from the library of Frances Elizabeth Henne, including some of her own books from her childhood, and others on children's literature inscribed to her by the authors; material for her class on illustration in children's literature, 1952-1979; and memorabilia. Also, a 3,000 card bibliography of children's books cited in book dealer catalogs as well as a small group of entries for monographs and serials with references to children's literature; printed ephemera collected by Phyllis Yuill Marquart (Columbia M.L.S., 1973) relating to her collecting of and research on Helen Bannerman's LITTLE BLACK SAMBO. Included are photocopies of Bannerman's out-of-print books, a folder on commercial spinoffs, such as Sambo's Restaurants, photocopies of various editions of STRUWELPETER, which contains the Sambo story and a 1971 BBC audio tape recording and transcript of a radio program on the topic.

Correspondence, manuscripts, notes, drafts of speeches, appointment books, subject files, documents, photographs, memorabilia and printed materials. There are notes from her lectures on Sociology at Adelphi College in 1911-1912; papers from 1912-1932, when Perkins served on the Commission for Safety and on the Industrial Commission of New York State; the main body of the material is from the period of her cabinet office, 1933-1945; and some items from her days on the Civil Service Commission, 1946-1953. Also included are personal and family papers.

This collection includes records from the Chinese Industrial Cooperatives (CIC, 工業合作社/工业合作社), China Aid Council (CAC, 美國援華會/美国援华会), and United Service to China (USC, formerly United Relief to China/URC, 美國援華聯合會/美国援华联合会/美國援華救濟聯合會/美国援华救济联合会). The records contain correspondence of individuals who participated in the cooperative and those associated with it; typewritten reports of sub-units to the parent organization; periodicals and other publications issued in Chinese by the three regional headquarters (the early ones are probably quite rare); publications in English by these headquarters and by American committees formed to aid in the movement; mounted photographs showing the work of the cooperatives and their leaders; albums of newspaper clippings on the movement, emanating from the U.S. and abroad; maps showing locations of cooperatives; pencil sketches and watercolors of cooperatives at work; and other material concerning this important organization which was largely responsible for China's ability to feed and clothe, and care for the people during the war.

Correspondence, manuscripts, lectures, notes, diaries, notebooks, reports, financial records, blueprints, photographs, and printed materials of Y.C. James Yen and the IIRR concerned with the development, sharing, and financing innovative methods of teaching, improving agriculture, health and family planning, and education in impoverished villages. Among the cataloged correspondents are: Pearl Buck, William O. Douglas, Nelson Rockefeller, and DeWitt Clinton.