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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.

Manuscripts, notes, correspondence, printed materials, and books. Ther collection contains typescript manuscripts with handwritten corrections of Cantor's novels"Enemy in the Mirror" (N.Y.: Crown Books, 1977) and "Love Letters" (N.Y.: Crown Books, 1980); printed works composed by Gallery 33 of the Composing Room, which Cantor headed from 196l to 1971; and articles by Cantor from various magazines, including "Esquire" and "Coronet". Also included are typescript manuscripts of "The Rite" (N.Y.: Zebra Books, 1979) and "The Nest" (N.Y.: Zebra Books, 1980), novels written by Cantor under the pseudonym Gregory A. Douglas. Series II of the collection contains 59 bound volumes of publications, edited by Cantor, from the "Research Institute of America", a New York based organization devoted to economic affairs

Correspondence, manuscripts, typescripts, research files, documents, printed materials, photographs, and memorabilia of Mr and Mrs Hough. Correspondence includes both personal and business letters, dealing with wildlife conservation, civic interests, and birding. There is some correspondence of George A. Hough, Sr., father of H.B. Hough, who was editor of the New Bedford MA Standard. Most of the correspondence is arranged alphabetically, by personal name or subject, out-going and in-coming filed together. Henry and Elizabeth Hough's correspondence, for which there are no in-coming or related letters, are filed chronologically. Cataloged correspondents include Calvin Coolidge, Max Eastman, Helen Keller, John F. Kennedy, Emily Post, and James Reston.

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.

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.

These files concern the publication of Anne Frank: the Diary of a Young Girl in 1952, the dramatization of this diary and the subsequent legal disputes with Meyer Levin over the play, and the motion picture made from the play. They also deal with the activities of the Anne Frank Foundation, primarily support for the renovation of the Anne Frank House in Amsterdam and the programs of the International Anne Frank Youth Center. These files include 145 letters from her father, Otto Frank, and letters from Alfred Kazin, Max Lerner, Meyer Levin, and Eleanor Roosevelt. There are also seven letters from Adela Rogers St. Johns and related materials about her own books and the 1963 volume of minutes of the Doubleday & Co. Publishing Committee.

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.