SR
Saul Rosenzweig
Saul Rosenzweig (1907–2004) was an American psychologist and therapist who studied subjects such as repression, psychotherapy, and aggression. Rosenzweig, who, with a co-author, has been credited with being the first to attempt to "elicit repression" in a laboratory setting, became well known after publishing a paper discussing "common factors" underlying competing approaches to psychotherapy.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

The Historic Expedition to America (1909) Freud, Jung and Hall the King-Maker
2000
ISBN 9780788194245
The Rosenzweig Picture-Frustration (P-F) Study
1978
ISBN 9780930172022