Comparative Religion

A Modern Zoroastrian

The Gospel of Ramakrishna

Our Sun God – The History of Christianity Before Christ

Zuñi Fetiches

The House of Islâm

Mohammedanism

The Religion of Babylonia and Assyria

The Book of Religions

Pagan Origin of Partialist Doctrines

Peter's Rock in Mohammed's Flood, from St. Gregory the Great to St. Leo III

Morality as a Religion

Mahometanism in its Relation to Prophecy

Religion in the Heavens; Or, Mythology Unveiled in a Series of Lectures

Serpent-Worship, and Other Essays, with a Chapter on Totemism

Bahaism and Its Claims

Cerberus, The Dog of Hades

Myths of China and Japan with illustrations in colour & monochrome after paintings and photographs

The Influence of Buddhism on Primitive Christianity

De Tribus Impostoribus, A. D. 1230: The Three Impostors

American Hero-Myths: A Study in the Native Religions of the Western Continent