Books
Jaki, Stanley L. Lord Gifford and His Lectures: A Centenary Retrospect. Edinburgh: Scottish Academic Press, 1987.
Jones, Bernard E. Earnest Enquirers After Truth: Excerpts from the Gifford Lectures, 1888–1968. New York: Routledge, 1970.
Witham, Larry. The Measure of God: Our Century-Long Struggle to Reconcile Science and Religion. New York: HarperCollins, 2005.
Dissertations
Hughes, Samuel David. “The Problem of Evil as Discussed in the Gifford Lectures from 1889–1986” (PhD dissertation, Baylor University, 1989).
Jones, Bernard E. “The Concept of Natural Theology in the Gifford Lectures” (PhD thesis, University of Leeds, 1966).
McKay, Orville H. “Theism and Reason: The Problem of Evil in the Gifford Lectures since 1900” (PhD dissertation, Drew University, 1941).