Contains note files created by Bergin on behaviorism, psychoanalytic concepts, behavior change, constructivist psychology, therapy approaches, and other related topics. Materials date from 1960 to 1969.

Contains articles and book reviews authored by Bergin. Topics include behavior therapy and ethical relativism, contemporary psychology, cognitive therapy, the deterioration effect, empirical analysis, eclecticism, negative effects, desensitization, personality, secular psychotherapy, religion and mental health, impulse control disorders, psychology and repentance, Mormon-themed psychology, and counseling and values. Materials date from 1957 to 1992.

Contains professional and personal records, correspondence, book production materials, research files, and course notes. Also included are copies of Bergin's numerous publications. Materials date from 1954 to 2013.