Correspondence, manuscripts, notes, notebooks, documents, photographs, course-related materials, and printed materials. The manuscripts include typescripts of Sykes' published and unpublished novels, monographs, plays, short stories, and articles. Among these are The Perennial Avant Garde, The Cool Millennium, and The Hidden Remnant. Sykes' notes and notebooks span the period from the early 1930s to 1980, and include preliminary ideas and sketches for his books, as well as autobiographical material. A small number of documents concern Sykes' wartime work in the U.S. Government Office of War Information. Course-related material including writings and correspondence of students taught by Sykes between 1962 and 1975 at the New School and as an adjunct professor at Columbia University. Printed materials consist of numerous reviews of Sykes' books, in addition to offprints and articles by Sykes. Included as well are printed materials about or connected with Sykes, offprints of articles inscribed to him, and many volumes from his library. The substantial correspondence series includes personal letters and correspondence with agents and publishers relating to his books. Correspondents include Harold Clurman, Aaron Copland, Lawrence Durrell, Georgia O'Keeffe, and Francis Steegmuller, as well as a number of Sykes' students. There is extensive correspondence between Sykes and the artist John Hartell from 1927 to 1983.

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, manuscripts, documents, memorabilia and printed materials. The correspondence deals with literary and political topics, from such people as Hayden Carruth, Irwin Edman, Lola Ridge and Norman Thomas; numerous manuscripts of Mrs. Marshall's writings, including the notes, drafts, manuscripts and proofs of her last novel THE HILL IS LEVEL and various manuscripts of the stories published in THE CONFRONTATION AND OTHER STORIES, and numerous manuscripts of poetry and short stories. Also included is material on the World War II draft of 19-year-olds, economic aid for Western Europe, the Vietnam War, the origin of SANE, the Committee for Nuclear Responsibility, the Amchitka Islands nuclear tests, the Task Force against Nuclear Pollution, and personal correspondence from her own and her husband's families

Personal and professional papers including correspondence, manuscripts, documents, diaries, journals, photographs, and printed materials relating to his teaching at various universities, his literary studies and writings, and his professional activities in such organizations as the Moder Language Association and P.E.N. His correspondents include contemporary authors such as Edmund Blunden, Christopher Hassall, Louis Kronenberger; scholars such as James P. Clifford, Leon Edel, and A.L. Rowse. There are also some letters collected by Halsband, including those by Mrs Piozzi, John Wilkes (1727-1797) and John Stuart, 3rd Earl of Bute (1713-1792). Among the manuscripts are notes, drafts, typescripts, and proofs of his LIFE OF LADY WORTLEY MONTAGU (Oxford, 1956) and COMPLETE LETTERS OF LADY MARY WORTLEY MONTAGU (Oxford, 1965-1967). Also, manuscripts and typescripts of Halsband's diaries, journals, lectures, articles, book reviews, and essays. The printed materials include ephemera, books, and offprints by Halsband and books by other authors inscribed to him. There is a watercolor portrait of Halsband by Stephen Andrews, London, ca. 1966.

Letters written to Gay from political and literary contemporaries such as Horace Greeley, Charles Sumner, and William Bryant; reports in letter form from his reporters at the front during the Civil War; and personal correspondence including many letters from his wife, Elizabeth Neall Gay. Letters written to Mrs. Gay from family friends and business associates including many from her husband. Correspondence of other members of the Gay family including Walter Gay, Sarah Gay, and Allan Gay. Diaries, notebooks, and journals of Sydney Howard Gay.