THE RELIGION OF TO–MORROW: A STUDY IN THE EVOLUTION OF RELIGIOUS THOUGHT WILLIAM JUVENAL COLVILLE 1917
NATURE’S SECRETS REVEALED: SCIENTIFIC KNOWLEDGE OF THE LAWS OF SEX LIFE AND HEREDITY OR EUGENICS THOMAS W. SHANNON 1917
ASGARD AND THE GODS; THE TALES AND TRADITIONS OF OUR NORTHERN ANCESTORS, FORMING A COMPLETE MANUAL OF NORSE MYTHOLOGY WILHELM WÄGNER 1917