;Books •
Spirits in Rebellion: The Rise and Development of New Thought, Southern Methodist University Press, 1963. •
Christian Science Today: Power, Policy, Practice, Southern Methodist University Press, 1958. •
Jesus Compared: A Study of Jesus and Other Great Founders of Religions, Prentice Hall, 1957. •
War, Communism, and World Religions, Harper & Brothers, 1953. •
The Scriptures of Mankind, An Introduction, The Macmillan Company, 1952. •
These Also Believe: A Study of Modern American Cults and Minority Religious Movements, The Macmillan Company, 1949. • ''Man's Quest for Salvation'', Willett, Clark & Company, 1941. • ''The World's Religions, A Short History'', Abingdon Press, 1939. •
Varieties of American Religion, Willett, Clark & Company, 1936. •
Procession of the Gods, Harper & Brothers, 1936. (with
Gaius Glenn Atkins) •
Modern Tendencies in World Religions, George Allen & Unwin, 1933. •
Religious Aspects of the Conquest of Mexico, Duke University Press, 1930. ;Articles • "Teaching the History of Religion",
Journal of Bible and Religion, Vol. 17, No. 2 (Apr., 1949), pp. 108–111. • "The Sects",
Annals of the American Academy of Political and Social Science, Vol. 256, Organized Religion in the United States (Mar., 1948), pp. 53–62. • "Why People Are Religious: A Study in Religious Motivation",
Journal of Bible and Religion, Vol. 15, No. 1 (Jan., 1947), pp. 38–45. • ==Notes==