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.

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.

Various letters and manuscripts by and about Sir Osbert Sitwell (1892-1969), Dame Edith Sitwell (1887-1964), and Sir Sacheverell Sitwell (1897-). There are 2 notebooks which Dame Edith Sitwell inscribed to Siegfried Sassoon containing drafts of her poem "Gold Coast Customs" as well as numerous other drafts of prose and poems.

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

The Shih-hui Hsiung (Shihui Xiong) papers consist of materials documenting Hsiung's life and political career from 1907 to 1974. The highlights of the papers are the manuscripts, which include six volumes of Hsiung's memoir, seven volumes of diaries over 43 years, and approximately 440 original handwritten speech scripts. The photographs and political and military affairs related documents focus on Hsiung's active involvement in the northeast region and abroad from 1930 to 1948. The papers overall consist of correspondence, calligraphy scrolls, diaries, a diploma, documents, letter books, manuscripts of published and unpublished works, maps, newspaper clippings, notes, oversize military notices, poems, photographs, photograph albums, reports, and other materials.

Correspondence, manuscripts, notes, documents, photographs and printed materials of Frank. The collection reflects almost every aspect of his career, but especially his life in Germany, France, and England after his expulsion from Russia in 1922. Among the correspondents are Nikolaĭ Berdi︠a︡ev, Sergeĭ Bulgakov, Albert Einstein, Georgiĭ Florovskiĭ, Nikolaĭ Losskiĭ, Fedor Stepun, and Petr Struve; there are one or two items each from Vi︠a︡cheslav Ivanov, Bernard Pares, and Alekseĭ Remizov. There are also many letters from Semen Frank and his wife Tati︠a︡na to their son Viktor, and from Peter Struve's family to the Franks. Manuscripts for several of Frank's books are in the collection, such as "Svet vo tḿe" "Realńost ́i chelovek" and "Biografii︠a︡ P.B. Struve." Other manuscript materials by Frank include essays and lectures, outlines of courses he taught as a professor in Russia before his expulsion, and notebooks. There are also two poems by Vi︠a︡cheslav Ivanov. Among the printed works are Frank's Bible and offprints of his articles. There are photographs of Sergeĭ Bulgakov, Fedor Stepun, and of the Frank and Struve families.

Correspondence, manuscripts, notes, documents, photographs, audio tapes, and printed materials of Rochelle Owens. Included are: correspondence with other writers, publishers, and friends; scripts and production files of her plays; and, manuscripts and drafts of her books and other poems, along with other related materials. Boxes 1-3: Cataloged correspondence; Boxes 4-12: Owens' writings by title (Manuscripts, notes, photographs& printed materials); Box 13-14: General file (Audio tape cassettes, Biographical materials, Misc., Photographs& Misc. printed materials); Oversize folder: Record album & Photographs.

Three groups of drawings, two in notebooks and the third torn from a notebook. 1). A 38 page spiral bound notebook containing 29 drawings, 9 pages of notes, and a concrete poem by Nancy Holt. Most of the drawings were done in preparation for his show at L'Attico Gallery in Rome, October 15 to November 7, 1969. The last two drawings refer to his travels in the Yucatan. 2). Three loose drawings torn from a larger spiral bound notebook. They are studies for L'Attico Gallery Exhibition. 3). A 12 page typewriter paper tablet containing 10 drawings (four are loose) and two pages of notes. The drawings were done from late 1969 through 1970 in Vancouver, the Anaconda Mines in British Columbia, and elsewhere.

Correspondence files of Roberts Brothers, pertaining to all departments, editorial, production, advertising, and sales. Also, some miscellaneous letters and documents, unrelated to Roberts Brothers, which deal with various legal matters, including those of Frederick D. Ely and of William A. Dunn, from 1838 until 1932, and letters to the Secretary of Harvard University from 1900 to 1907.

Correspondence, manuscripts, drawings, photographs, and printed material of Lax. Included are letters of Mark and Dorothy Van Doren and Thomas Merton. The bulk of the collection is comprised of Lax's poetry and journal manuscripts, many written in Patmos and Kalymnos, Greece, and originally sent to Emil Antonucci of the Journeyman Press in New York for publication. Also, printed photographs and unprinted negatives of pictures taken by Lax, primarily in Greece.