Correspondence, art work, and memorabilia of Rood, including letters to Rood from colleagues, scientists, and artists including Albert Bierstadt, Arthur J. Evans, Joseph Henry, and Charles Eliot Norton. Family letters to and from his wife, Matilda, and children; letters from his wife to her mother, Anna Prunner, in Germany; sketchbooks, drawings, and etchings of Rood and his son, Roland Rood; and photographs and memorabilia.

Papers of McCrea containing manuscripts of his addresses and essays on classical themes and on specific Latin authors including Cicero, Horace, and Lucretius. There is an unpublished book manuscript in various stages of completition entitled "Cicero as Philosopher." Letters to McCrea from Nicholas Murray Butler, Gonzalez Lodge, Frank A. Patterson, and Ernest G. Sihler, dealing with university and academic matters. In addition to some family documents and photographs of McCrea, there are twelve folders of essays and themes written for Columbia College classes by a relative, Robert Glenn McCrea, who received his A.B. degree in 1896. Also a group of term papers submitted to McCrea, a grade book for Latin courses, and exam questions prepared by McCrea for M.A. and Ph.D. candidates.

Materials from the office of Professor Charles Edward Lucke (1876-1951), Chair of the Department of Mechanical Engineering, Columbia University, relating to the National Museum of Engineering and Industry. The collection is composed of correspondence, much of it addressed to H.F.J. Porter, the secretary, and various types of reports.

Incoming correspondence of Smith, containing letters from professional colleagues, university administrators, diplomats, and European acquaintances concerning international affairs, with emphasis on Germany and her role in World War I. References to Germany and the war are in the form of comments about Smith's publications during the period 1913-1919. Of particular importance are two letters from the Paris Peace Conference by James t. Shotwell and Robert Lansing. Other letters of interest are those from Frank Johnson Goodnow while he was in Peking, 1914; from Frederic William Maitland, relating to Cuba, 1889, 1902; from Alfred Nerincx relating to Belgium; from J.V. Sedmik describing political conditions om Czechoslovakia, 1924; from Theodore Roosevelt, 1915-1916, commenting on Smith's pamphlet MILITARY STRATEGY AND DIPLOMACY; and from John William Burgess, most of which were written while he was in Germany, 1905, 1906, 1907.

Correspondence, manuscripts, notes, and photographs of Kay, including files of correspondence from his student years to the time of his death, primarily on professional and academic matters; geological field notebooks, 1923-1975; manuscript materials for his book, STRATIGRAPHY AND LIFE HISTORY (written with E.H. Colbert); files on the Gander Conference, 1964-1970; manuscripts and typescripts of various lectures and articles; syllabi and various other academic files; and photographs and illustrations, primarily those used in STRATIGRAPHY AND LIFE HISTORY.

Correspondence, manuscripts, notes, and publications of Rogers. His correspondence contains letters from many prominent public administrators, historians, jurists, and politicians including Charles Beard, Edward Mead Earle, Felix Frankfurter, Herbert H. Lehman, Franklin Delano Roosevelt, and Harry S. Truman.

Correspondence with André Gide, the manuscripts and notes for his biography PORTRAIT OF ANDRÉ GIDE, and for his translations of the JOURNALS OF ANDRÉ GIDE, SO BE IT, and PRETEXTS, and other notes and articles about André Gide. Also, correspondence with many contemporary French writers including Albert Camus, Jean Cocteau, Julian Green, Valéry Larbaud, Jean Malaquais, Roger Martin du Gard, André Maurois, Henry de Montherlant, and Georges Simenon. Prof. O'Brien translated works by Baidouy, Albert Camus, Jean Cocteau, Henry de Montherlant, Nathalie Sarraute, and Jean-Paul Sartre; the typescript of Camus' L'EXILE ET LE ROYAUME is of special interest. Professor O'Brien's files cover a broad range of French culture including correspondence with other French scholars, educational organizations, editors, publishers (notably Blanche W. Knopf), with members of the OSS in wartime France, and with other literary figures such as Gilbert Highet, Dwight Macdonald, and Klaus Mann.

Correspondence, manuscripts, notes, documents, book typescripts, photographs, and printed materials covering the time from Dorfman's early interest, as a graduate student, in the economic thought of Thorstein Veblen until his retirement. There is correspondence with his academic colleagues, students, publishers, and the family and students of Thorstein Veblen, as well as manuscripts, typescripts, drafts, revisions, notes, photographs, pamphlets, and related materials for his articles and books which include: THORSTEIN VEBLEN AND HIS AMERICA, 1934; THE ECONOMIC MIND IN AMERICAN CIVILIZATION, 1946-1959; EARLY AMERICAN POLICY, 1960; INSTITUTIONAL ECONOMICS, 1963; TYPES OF ECONOMIC THEORY, 1967; and NEW LIGHT ON VEBLEN, 1973

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.

Papers consisting primarily of Hyslop's manuscripts on ethics. Also, three certificates of membership in professional societies.