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

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.

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, manuscript music scores, copies of scores, playscripts, scenarios, watercolor drawings and other stage designs, contracts, legal papers, programs, clippings and other printed materials, microfilms, records, tape recordings, and photographs. Among Moross's work are the musical play, "The Golden Apple"(1954), dance music for "Ballet Ballads"(1945) and for "Frankie and Johnny"(1938), the film score for "The Big Country"(1958) and for "The Cardinal"(1963), and his Symphony No. 1 (1943). There are some financial papers and production records for the staging of his works. Among the cataloged correspondents are Aaron Copland, Agnes George De Mille, Ned Rorem, Virgil Thomson, and Thornton Wilder.

Research materials relating to the creation and installation of sound sculptures by Max Neuhaus.

Correspondence, manuscripts, documents, photographs, article, essays, exhibition catalogs, printed material, and 9 floppy disks of her research on artsits and art in Vichy France, as well as Max Jacob, the French poet, painter, writer, and critic.

The Morton Feldman Collection of Audio Recordings contains 52 reel to reel tapes and 35 cassette recordings, including performances of 38 compositions by Morton Feldman. The collection also includes some events, including the conversations between John Cage and Feldman recorded in 1966 as Radio Happenings I and II, the memorial service for Feldman at St. Mark's Church in New York City, a tribute radio program broadcast by WNYC 7 November 1987 in New York City, and an interview of Jan Williams by Sebastian Claren about Feldman. Other composers represented by recordings include Harrison Birtwistle, Pierre Boulez, John Cage, Barbara Monk Feldman, and Bunita Marcus.

Correspondence, manuscripts, playscripts, screenplays, diaries, documents, contracts, financial records, photographs, phonograph records, motion pictures, playbills, posters, sheet music, cartoons, art work, memorabilia, scrapbooks, and printed materials. . The collection consists chiefly of correspondence and production files relating to the creation, production, and performance of their works for stage, screen, radio, and television, such as Leave It To Me and Kiss Me Kate (with music by Cole Porter), Boy Meets Girl, and My Three Angels. Correspondence (with twentieth century authors, playwrights, musicians, political figures, and actors) includes: George Abbott, Jean Arthur, Bennett Cerf, Katharine Cornell, Jo Davidson, George and Ira Gershwin, Alec Guinness, W. Averell Harriman, Lilli Lehmann, Mary Martin, Laurence Olivier, Mary Pickford, Cole Porter, Regina Resnick, Eleanor Roosevelt, Robert E. Sherwood, Lincoln Steffens, Kurt Weill, Rebecca West, and Thornton Wilder. There is also correspondence concerning Bella Spewack's work with the New York Girls' Scholarship, UNRA, and the Sports Center of Israel. In addition to the production files, there are manuscripts and typescript drafts for novels, short stories, and articles by the Spewacks.