Correspondence, memoranda, speeches, lectures, writings, reports, notes on dreams, transcripts of discussions and conference proceedings, biographical material, bibliographies, printed matter, and other papers concerning Rapaport's research and writings in the fields of psychology and psychoanalysis chiefly while a research associate at the Austen Riggs Center in Stockbridge, Mass. Documents his development of diagnostic psychological testing and his efforts to clarify and systematize psychoanalytic theory. Research topics also include conciousness, ego psychology, emotions and memory, metapsychology, motivation, and thought processes.

Papers of Rapaport's wife, Elvira Rapaport Strasser, consist of correspondence, her unpublished memoirs, and materials documenting programs and scholarships established in her husband's name. Subjects of Stasser's memoirs include her early life in Hungary and her experiences on a kibbutz in Palestine, 1933-1935.

Correspondents include Bruno Bettelheim, John C. Burnham, Sibylle K. Escalona, Hanna Fenichel, Anna Freud, Merton Max Gill, Heinz Hartmann, Lawrence S. Kubie, Martin Mayman, Karl A. Menninger, Roy Schafer, Richard F. Sterba, and Peter H. Wolff.