Earl Hopper obituary Were you leaving without saying goodbye?

Aeon Video (2019) James Baldwin vs William F. Buckley: A Legendary Debate from 1965. Available on YouTube.

Bion W (1961) Experiences in Groups. London: Routledge.

Buccola N (2019) The Fire is Upon Us: James Baldwin, William F. Buckley Jr, and the debate over race in America. Princeton: University Press.

Hopper E (2003a) Traumatic Experience in The Unconscious Life of Groups. London: Jessica Kingsley.

Hopper E (2003b) The Social Unconscious: Selected Papers. London: Jessica Kingsley.

Hopper E (2023) A Hopeful Memoir of the ‘Baldwin/Buckley Debate’ in 1965, in Cambridge, England. Forum 11: 52–56.

Hopper E (2024) The Tripartite Matrix in the Developing Theory and Expanding Practice of Group Analysis. The social unconscious in persons, groups and societies. London: Routledge.

Hopper E (2025) Unpublished comment for Renee Danzinger’s forthcoming book American Dream.

Hopper E Weinberg H (2011) (eds) The Social Unconscious in Persons, Groups, and Societies, Vol. 1. Mainly Theory. London: Karnac.

Hopper E Weinberg H (2016) (eds) The Social Unconscious in Persons, Groups, and Societies Vol. 2: Mainly Foundation Matrices. London: Karnac.

Hopper E Weinberg H (2017) The Social Unconscious in Persons, Groups, and Societies, Vol. 3: The Foundation Matrix Extended and Re-configured. London: Karnac.

Nitzgen D Hopper E (2017) The concepts of the social unconscious and of the matrix in the work of S.H. Foulkes. In: Hopper E Weinberg H (eds) The Social Unconscious in Persons, Groups, and Societies, Vol. 3: The Foundation Matrix Extended and Re-configured. London: Karnac, pp. 3–25.

Penna C (2023) From Crowd Psychology to the Dynamics of Large Groups. Historical, Theoretical and Practical Considerations. London: Routledge.