THE ENCHANTED BOUNDARY: BEING A SURVEY OF NEGATIVE REACTIONS TO CLAIMS OF PSYCHIC PHENOMENA 1820–1930 WALTER FRANKLIN PRINCE 1930
AMULETS AND SUPERSTITIONS: (…) TALISMANS AND MAGICAL FIGURES, WITH CHAPTERS ON THE EVIL EYE, THE ORIGIN OF THE AMULET, THE PENTAGON, THE SWASTIKA, THE CROSS (PAGAN AND CHRISTIAN), THE PROPERTIES OF STONES, RINGS, DIVINATION, NUMBERS, THE KABBÂLÂH, ANCIENT ASTROLOGY ERNEST ALFRED WALLIS BUDGE 1930
THE FIGHT TO CONQUER THE ENDS OF THE EARTH: THE WORLD’S GREAT ADVENTURE: 1000 YEARS OF POLAR EXPLORATION INCLUDING THE HEROIC ACHIEVEMENTS OF ADMIRAL RICHARD EVELYN BYRD FRANCIS TREVELYAN MILLER 1930
AMEN, THE KEY OF THE UNIVERSE. IN WHICH THE FUNDAMENTAL PRINCIPLES OF THE UNIVERSE ARE EXPRESSED LEONARD BOSMAN 1930