What is God?
New York: Jeremy P. Tarcher/ Penguin, 2009. First edition, first printing. Hardcover, in dust jacket.
New York: Jeremy P. Tarcher/ Penguin, 2009. First edition, first printing. Hardcover, in dust jacket.
George Allen, 1920. Later edition. Tan cloth, no dust jacket.
Citadel, 1961. Later printing. Hardcover, in dust jacket.