Correspondence and manuscripts. The collection includes manuscript drafts and typescripts of two volumes of his autobiography: THE OLD CENTURY AND SEVEN MORE YEARS, 1938; and THE WEALD OF YOUTH, 1942. There are also 13 volumes of early notebooks for the period 1894 until 1909 (from age 8 to 22) containing drafts of over 200 poems, 19 short stories and many drawings. There is some correspondence about the autobiography. Also includes 21 letters from Arnold Bennett, 51 letters from Lady Ottoline Morrell, 26 letters from H.M. Tomlinson, 19 letters from Sassoon to his mother-in-law, Lady Gatty, 22 letters from Sassoon to his son, letters from many others, and a typescript of his poem "A love affair" with holograph note

Correspondence, manuscripts, subject files and research notes of Sigmund Diamond. Included among the correspondence are Diamond's letters to and from various distinguished members of Columbia University and other academic insitutions, as well as correspondence with many noted sociologists and historians. Included in the manuscripts is Diamond's "In Quest." The subject files comprise material from Diamond's tenure at Columbia and include some material pertaining to his forced departure from Harvard in the 1950's due to his previous communist affiliation, and his active role in maintaining the efficacy of the Freedom of Information Act. The research files include microfilms and notes.

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.

The collection includes the original manuscript of "Surrender on Demand", Mr. Fry's account of his wartime experiences, which was later rewritten for young readers as "Assignment Rescue" (New York, Four Winds Press, 1968). Among the correspondents represented in the collection are Marc Chagall, Jacques Lipchitz, Roger Baldwin, Norman Thomas, J. Edgar Hoover, and Herman Wouk. In addition to the material relating to the Emergency Relief Committee (later known as the International Rescue Committee), the collection includes correspondence and papers concerning Fry's work as a writer on foreign affairs as well as copies of his books.

Correspondence, manuscripts, notes and printed materials concerning Robinson's work at the University of Pennsylvania School of Social Work and her publications which include a memorial volume about her colleague, Jessie Taft.

The V. K. Wellington Koo papers document the diplomatic legacy of Wellington Koo as a Chinese statesman and diplomat of the 20th Century. The papers primarily consist of materials collected during Koo's diplomatic career, relating to the Lytton Commission, 1932-1933; the League of Nations, 1931-1940; the United Nations, 1944-1946; his ambassadorships to France, 1932-1941; to Britain, 1941-1946; to the United States, 1946-1956; as the Senior Advisor to the Republic of China from 1956; and as the Judge on the International Court of Justice, 1957-1966. The materials include correspondence, diaries, memoranda, manuscripts, documents, notes, speeches, maps, photographs, printed material, and audio visual material. The bulk of the materials emphasizes China's domestic and foreign affairs, such as the Sino-Japanese conflict, World War II and the Cold War in the Far East region, as well as the League of Nations and the United Nations.

Correspondence, manuscripts, notes, memoranda, notebooks, notecards, proofs, photographs, microfilms, and printed materials. The Papers include the manuscript research materials and correspondence for each of his books except his biography of Theodore Dreiser. Among the correspondents are William Benton, Bruce Catton, Carey McWilliams, Mrs. Fremont Older (Cora Miranda Baggerly Older), and Thornton Wilder.

Professional correspondence, diaries, unpublished articles, lecture notes, abstracts, and other manuscripts by Mitchell. Subjects include economic theory and its history, business cycles, money, national planing, anthropology and psychology, and published material by Mitchell and others.

The Willard L. Severinghaus Papers include the personal and professional papers of Columbia University Physics professor Willard Lesly Severinghaus, as well as a small amount of material related to the extended Severinghaus family. There are also record books from the Terre Haute, Indiana German Methodist Episcopal Church where Severinghaus's father, John F. Severinghaus, was pastor.