The Voice of the Silence: Being Extracts from the Book of the Golden Precepts by H.P. Blavatsky (PDF)

Isis Unveiled: A Master-Key to the Mysteries of Ancient and Modern Science and Theology Volumes 1 and 2 by H. P. Blavatsky (PDF)

The Secret Doctrine: The Synthesis of Science, Religion and Philosophy – Vol. 2 Anthropogenesis by H. P. Blavatsky (PDF)

The Secret Doctrine: The Synthesis of Science, Religion and Philosophy – Vol. 1 Cosmogenesis by H. P. Blavatsky (PDF)