Correspondence, memoranda, manuscripts, documents, photographs, printed material, and memorabilia of Ascher. Also, his notes and diary/datebooks, as well as typescripts for many of his reports, articles, and reviews. Among the major correspondents are Roger Nash Baldwin, Mary Steichen Calderone, Julian Huxley, Margaret Mead, Jo Mielziner, Lewis Mumford, Alva Myrdal, Edwin Herbert Samuel (2nd Viscount Samuel), Percy E. Sutton, and Constantine D. Tsatsos.

Papers of Smedley, including correspondence, memoranda, manuscripts, and printed materials about the United Nations, national politics and elections, and civic organizations in New York City and in Connecticut. Correspondents include Hubert Humphrey, John F. Kennedy, and Bertrand Russell.