The papers, which date chiefly from after 1957, document the life and work of Polish-American author Jerzy Kosinski and include writings, correspondence, printed material, photographs, audiovisual materials, personal papers, and ephemera. The papers were collected by Kosinski's widow, Katherina von Fraunhofer-Kosinski (Kiki Kosinski). Correspondence includes fan mail and professional correspondence with writers, publishers and film producers. Writings include numerous revised drafts and proofs of Being There, The Hermit on 69th Street and other works. The significant quantity of photographs include informal snapshots, formal portraits and Kosinski's artistic projects. Audiovisual material includes audio and video recordings of interviews with Kosinski and broadcasts about Kosinski. Other papers include correspondence, photographs and other papers related to Mary Weir (Kosinski's wife from 1962 to 1966) and the Weir family.