Literary agents

Papers concern Hopkins' work on behalf of authors as an editor and agent and include correspondence, memoranda, contract summaries, and production records; correspondence often includes extensive discussion of a book's ideas, of changes and alterations, and of public response. Authors include Ben H. Bagdikian, Robert Bendiner, James MacGregor Burns, Marquis W. Childs, Eugene Genovese, Leonard W. Levy, Frank Mankiewicz, Edwin Newman, and Stan Steiner.

Includes manuscripts of works by McCarthy, correspondence with agents and publishers, correspondence with publications like the and ; and subject files on a variety of issues such as dissidents, Spanish Refugee Aid and the Vietnam War. There is also extensive correspondence with friends, family members and other literary figures like Carmen Angleton, Hannah Arendt, Nicola Chiaromonte, Elizabeth Hardwick, Lotte Kohler, Dwight Macdonald, Cees Nooteboom, Philip Rahv, Arthur Schlesinger, Stephen Spender and Niccoló Tucci. Among the legal papers are items on Lillian Hellman. There are also photos, videotapes, scrapbooks and realia.

Material relating to Mason's work as a writer and literary agent as well as more personal material regarding her family, friends, marriage and education. Includes, professional and personal correspondence, manuscripts, photographs, postcards, and biographical information; and Eliot F. Bartlett's correspondence and notes regarding these papers.