Papers of the American author, poet, publisher. Correspondence (1942-1964); manuscript poems and essays; and published materials, including articles and clippings by and about Swallow, book reviews, poems, and stories by Swallow, and photographs. Correspondents include Louise Bogan, Weldon Kees, Archibald MacLeish, Henry Miller, Marianne Moore, Isaac Bashevis Singer, Wallace Stevens, Allen Tate, Robert Penn Warren, William Carlos Williams, and others.

Correspondence, incoming and outgoing (1856-1967); legal and financial records; memorabilia, including address books, clippings, genealogical records, and photographs; and writings, mostly of Roger Burlingame, including manuscript and/or published articles, books, book reviews, diaries, poems, short stories, and speeches. Family members represented include Anson Burlingame (1820-1870), a politician and diplomat; Edward L. Burlingame (1848-1922), author and editor; William Roger Burlingame (1889-1967), author, biographer, and novelist; and his wife, Angeline Whiton (d. 1967), a literary agent, known professionally as Ann Watkins. Notable correspondents include authors, poets, artists, etc.

Papers of the American author, lecturer, novelist, and literary critic. Correspondence, 1929-80, with Harriette Arnow, Newton Arvin, Van Wyck Brooks, Baker Bromell, Malcolm Cowley, Robert Cantwell, Robert Gorham Davis, Henry Christman, George Cole, James T. Farrell, Joseph Freeman, Herbert Gold, Corliss Lamont, Lucy Robbins Lang, John Lydenburg, Georgia McKinley, Fulmer Mood, Walter Ripton Morris, Wright Morris, Richard Rovere, Evelyn Scott, Lincoln Steffins, and Ella Winter, among others. Also correspondence and editorial reader's reports for Macmillan Publishing Company. Writings include articles, book manuscripts, a journal (1942-1973), lectures, as well as research notes, correspondence, and memorabilia relating to the production of Hicks' biography of John Reed. Large collection of printed material includes book reviews, clippings, and an assortment of Leftist pamphlets and periodicals from the 1930s.