African Genesis: A Personal Investigation into the Animal Origins and Nature of Man
Approaching the 21st Century: Opportunities for NIMH Neuroscience Research.
Kinds of Minds: Toward an Understanding of Consciousness (Science Masters).
Messianism, and Crime: A Study of Antinomianism in Modern Literature and Lives.
Mind Sights: Original Visual Illusions, Ambiguities, and Other Anomalies, With a Commentary on the Play of Mind in Perception and Art
Seeing the Difference: Conversations on Death and Dying (Doreen B. Townsend Center Occasional Papers, 24-25)
Stereogram (Three-dimensional stereogram images, often called Magic Eye images)