Papers of the General secretary of the Communist Party of the United States from 1930 through its dissolution in 1944. When the Party was reconstituted as the Communist Political Association later that year, Browder was chosen as its President, however he was expelled in 1946 following a debate over Party leadership. Following his expulsion, Browder lectured and wrote about Marxism and represented Soviet writers and publishers for publication in the United States. Collection includes correspondence/subject files (1879-1970) relating to Marxist philosophy, the workings of the C.P.U.S.A., Browder's role within the Party and to Browder's business ventures as well as legal files (1938-1958); manuscripts (1924-1967) of Browder and others, including Browder's manuscripts for articles, books, memoranda, news releases, pamphlets, reports, and speeches; and memorabilia including personal files and photographs of Browder and his family, and some colleagues. Notable correspondents include Roger Baldwin, Daniel Bell, Bruce Bliven, Rudy Blum, Louis B. Boudin, Juan Antonio Corretjer, Theodore Draper, Elizabeth Gurley Flynn, William Z. Foster, Joseph Freeman, A.A. Heller, Lotte Jacobi, Alfred Kohlberg, Robert S. Minor, Tom Mooney, Paul and Eslanda Goode Robeson, Anna Rochester, Franklin D. Roosevelt, Jack Selford, Joseph R. Starobin, I.F. Stone, John Strachey, Anna Louise Strong, Dirk Jan Struik, Norman Thomas, Harry Frederick Ward, Sumner Welles, and others. Also included is a holograph letter of greeting from Mao Zedong. The collection also includes Browder's personal library and other published materials.

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.

The Leo Hurwitz Collection consists of correspondence and papers (both business and personal), scripts, storyboards, publications and clippings, research materials, financial records, promotional material, interviews, festival materials, film and audio dating from 1910-1992, bulk 1925-1991. The collection covers the whole of Hurwitz’s professional career and to a lesser extent his personal life, but with much overlap in the materials themselves. The collection documents Hurwitz's involvement with many notable figures, including Paul Strand, Elia Kazan, Joris Ivens, Paul Robeson, Ralph Steiner, W.E.B. Du Bois, Henri Langlois, Woody Guthrie, James Blue, and Edwin Rolfe.

Death penalty abolitionist who worked with many anti-death penalty organizations, capital defense attorneys, representatives of various communities of faith, newspaper editorial boards, victims' rights groups, members of the families of the condemned, and many death row inmates throughout the country.

Papers of the Hungarian-American psychiatrist and scholar. Collection contains correspondence, memorabilia, photographs, writings, audio and video recordings.