UFOS AND RELATED SUBJECTS: AN ANNOTATED BIBLIOGRAPHY BY LYNN E. CATOE, LIBRARY OF CONGRESS, DEFENSE TECHNICAL INFORMATION CENTER (1969)
OAHSPE : A NEW BIBLE IN THE WORDS OF JEHOVIH AND HIS ANGEL EMBASSADORS ; A SACRED HISTORY OF THE DOMINIONS OF THE HIGHER AND LOWER HEAVENS ON THE EARTH FOR THE PAST TWENTY-FOUR THOUSAND YEARS BY JOHN BALLOU NEWBROUGH (1842)
THE INVISIBLE COLLEGE: WHAT A GROUP OF SCIENTISTS HAS DISCOVERED ABOUT UFO INFLUENCE ON THE HUMAN RACE BY JACQUES F. VALLÉE (1975)
EARTH’S EARLIEST AGES : AND THEIR CONNECTION WITH MODERN SPIRITUALISM AND THEOSOPHY BY G. H. PEMBER (1889)
THE KINGDOM OF AGARTTHA: A JOURNEY INTO THE HOLLOW EARTH (MISSION DE L’INDE EN EUROPE) BY ALEXANDRE SAINT-YVES D’ALVEYDRE (1886)
THE HIDDEN DANGERS OF THE RAINBOW THE NEW AGE MOVEMENT AND OUR COMING AGE OF BARBARISM BY CONSTANCE E. CUMBEY (1983)