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Nikola Tesla papers, 1894-1931

3.5 linear feet
Abstract Or Scope

Correspondence of Nikola Tesla and Robert Underwood Johnson include letters of Tesla to Johnson's wife and daughter, clippings, photographs, and miscellaneous materials. Letters to George Scherff, 1902-1930, and others, manuscripts, printed articles, patents, and brochures. The material is of a technical nature and the letters deal primarily with Tesla's work on transformers, turbines, steam and gas oscillators, compressors, pumps, induction motors, and wireless transmitters. Also, printed materials by and about Tesla, including DR. NIKOLA TESLA BIBLIOGRAPHY (1979) by John T. Ratzlaff and Leland I. Anderson; and published selections from diary entries, correspondence, patents, and patent wrappers by Tesla published by the Tesla Book Company. There is also a videotape cassette "Nikola Tesla the Genius Who Lit the World".

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Earl I. Sponable papers, 1928-1968

125 boxes
Abstract Or Scope
Earl I. Sponable was a chemist, Chief Engineer and Director of Research for Twentieth Century-Fox Film Corporation and its subsidiaries, 1926-1962. He was active in many aspects of research and development in broadcast and movie media, particularly in early sound film.
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Elliott M. Sanger papers, 1936-1986

3.5 linear feet
Abstract Or Scope

Included are Sanger's personal diaries (1936-1967) relating to WQXR. Also included is a complete bound file of the WQXR PROGRAM GUIDE (June 1936-December 1963) containing a record of the broadcasting of classical music in New York City, the daily schedule, and essays on composers, music festivals, individual compositions and music in general by such writers as Irwin Edman, Will Durant, M. Lincoln Schuster, Edward Johnson, John Barbirolli, as well as by Sanger and his co-founder, John V. L. Hogan. The collection includes business letters, congratulatory and testimonial letters from listeners and advertisers, reports on the station's history, samples of newspaper clippings containing WQXR advertisements and program listings, market surveys of listeners, and promotional brochures prepared for prospective advertisers. There is a corrected typescript and galley proofs for Sanger's book Rebel In Radio (New York, Hasting House, 1972) and 6 volumes of documents in support of the station's application for "clear channel" status filed with the FCC. Also included are 49 photographs of the station's staff and musical personalities, 4 audiotapes of 1973 interviews with Sanger, and 4 audio cassettes celebrating WQXR's 50th Anniversary.

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Edwin H. Armstrong papers, 1886-1982, bulk 1912-1954

295.7 linear feet
Abstract Or Scope

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

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