Correspondence, family papers, writings, book files, notes on workshops and other meetings, project files, academic files, research files, transcripts of psychotherapy sessions, and administrative papers documenting Rogers's career. Pertains chiefly to his association with the Center for Studies of the Person, La Jolla, Calif., of which he was a founding member, and his work as a proponent of humanistic psychology, client-centered psychotherapy, the human potential movement, encounter group methods, and the interdisciplinary application of psychological principles. Also documented are his years at the Rochester Society for the Prevention of Cruelty to Children (N.Y.) and the Western Behavioral Sciences Institute, La Jolla, Calif., and his academic career at the University of Chicago and the University of Wisconsin--Madison. Correspondents include his children, medical educator David E. Rogers and pyschologist Natalie Rogers, and his biographer, Howard Kirschenbaum. Other correspondents include Charles Devonshire, Richard Evans Farson, Car Foster, T. Len Holdstock, William T. Powers, Orienne Strode, Gay Swenson, Reinhard Tausch, and Tô Thị Anh.