Letters and manuscripts of MacDowell. One group was written to Arthur P. Schmidt, his publisher during MacDowell's years as professor of music at Columbia University. These letters concern the publication and distribution of his compositions and his copyright difficulties with other firms, especially Brietkopf & Härtel. There are eight letters from MacDowell to the American pianist, composer, and pedagogue William Mason. This personal correspondence deals with such things as musical pieces dedicated by each man to the other. A diary and letter book belonging to Marian N. MacDowell (Mrs. Edward) contains draft copies of letters to Nicholas M. Butler and others relating to his controversial career at Columbia University. Also, photocopies of eight letters from the Mary Flagler Cary Music Collection at the Morgan Library. Among the numerous musical scores and sketches are his INDIAN SUITE and the SONATA TRAGICA. Also, two original drawings of MacDowell by Orlando Rowland; and correspondence, manuscripts, catalogs, and other materials relating to the MacDowell Exhibition at Columbia University in 1938.

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

Manuscripts of essays and course notes taken while a student at Amherst College, 1884-1889, and at Berlin University, 1892-1894. Articles, addresses, essays, lectures, lecture notes and reading notes. Also included are diaries for the years 1936-1940 and correspondence concerning Amherst College, Columbia University, and Woodbridge's stay as a visiting scholar in Berlin, 1931-1932. Among his correspondents are: Frederick S. Allis, Secretary of the Amherst Board of Trustees; Stanley King, President of Amherst; and Nicholas Murray Butler, President of Columbia. Some photographs are also included.

Papers pertaining to Heuser's studies of Gerhart J.R. Hauptmann (1862-1946), the German dramatist of social protest and early exponent of realism. There is correspondence both with Hauptmann and with others prominent in literary and academic fields, giving their views on Hauptmann. The correspondence is roughly in two groups; letters written to Heuser during his trip to Germany in 1923; and letters concerning Hauptmann's visit to the United States to deliver the oration at the exercises held at Columbia University in commemoration of the 100th anniversary of the death of Goethe, 1932. There are twenty letters from Hauptmann and 59 letters from his wife Margarete. The correspondence with the Hauptmann family continues up to 1957. There are twelve boxes of manuscripts and notes on Hauptmann; and five boxes of mounted clippings and printed extracts. Among the miscellaneous correspondence are letters from H.L. Mencken, Auguste Forel, Albert Schweitzer, Tristram Coffin, and Nicholas Murray Butler. Also, photographs relating to Hauptmann.

Correspondence, miscellaneous notes, manuscripts and documents, memorabilia, photographs, clippings, and printed material. The chief correspondents are Nicholas Murray Butler, Charles George Proffitt, and Herbert S. Renton. The collection relates to the theater, to the ANNALS and to Odell's other work, SHAKESPEARE FROM BETTERTON TO IRVING.

This is a collection of material relative to the life and career of Prof. Peck. The collection centers around the breach of promise suit brought by Miss Esther Quinn against Dr. Peck and his subsequent dismissal from the university in 1910. The material includes numerous clippings and letters from, to, and relating to Peck from President Nicholas Murray Butler of Columbia, Dr. Robert Arrowsmith of the American Book Company, and others. There are also letters relative to Peck's early teaching career and his life after leaving Columbia. Also, correspondence and other materials relating primarily to Prof. Peck's editorship of THE BOOKMAN, 1895-1907, and of two encyclopedias, THE INTERNATIONAL CYCLOPEDIA and THE NEW INTERNATIONAL ENCYCLOPEDIA.

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

Three scrapbooks of correspondence, documents, and clippings of Zanetti. Scrapbook, 1929-1941, containing clippings about ALICE'S ADVENTURES IN WONDERLAND by Lewis Carroll and the Lewis Carroll centenary in 1932; and other unrelated clippings. Scrapbook, 1940-1952, containing correspondence, documents, and memorabilia dealing with Zanetti's World War II Army service with the Chemical Warfare Service in London. Among the correspondents are Omar N. Bradley, Nicholas Murray Butler, W. Averell Harriman, and the 9th Duke of Portland. Scrapbook, 1917-1940, containing correspondence, documents, and memorabilia dealing with Zanetti's World War I Army service with the Chemical Warfare Service in France and his later work with the Army Reserve; and his military medals, 1919-1945.

Correspondence relating to Erskine's various educational, musical and literary interests; manuscripts of his writings; lecture notes for college courses; souvenirs of his army service in World War I and his Columbia University professorship, and student papers from his own school and college days. Also, biographical file, scrapbooks, and articles.

Correspondence, research notes, articles, clippings, photostats, and photographs. These files concern his interest in Pierre Bayle, Antoine Arlier, and the Renaissance in Provence, as well as the Romanic Review, philology, French, Spanish, and celtic studies. Among the correspondents are: Philippe Berthelot, Nicholas Murray Butler, F.R. Coudert, John H. Finley, the Prince de Ligne, Curtis Hidden Page, William B. Parsons, and Aime ́Puech.