Comparative Religion

The Religion of Numa

The Religious Spirit of the Slavs

The Penitente Moradas of Abiquiú

The Oriental Religions in Roman Paganism

A New Religious America

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

Bahaism and Its Claims

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

Ancient Faiths And Modern

The Origin of Christian Science

Pagan and Christian Creeds: Their Origin and Meaning

The Independent Church of God of the Juda Tribe of Israel: The Black Jews

Between Heathenism and Christianity

Twice-born Men in America

India's Problem, Krishna or Christ

Where Science and Religion Meet

Lectures on the Origin and Growth of Religion as Illustrated by the Native Religions of Mexico and Peru

Religions of Primitive Peoples

Folklore of Wells: Being a Study of Water-Worship in East and West

Islam