Essays on the Philosophy of David Hume: Natural Religion, Natural Belief, and Ontology.
Caravan Books, Delmar, New York, 1996
ISBN: 0-88206-086-4
Essays on the Philosophy of David Hume: Volume 2, Epistemology: Natural Religion: the Self, Sympathy, and Moral Conduct.
Caravan Books, Ann Arbor, Michigan, 2010
ISBN: 978-0-88206-115-3
Essays on the Philosophy of David Hume: Volume 3, Epistemology and Morality; Natural Religion
Caravan Books, Ann Arbor, Michigan, 2017