THE MATCHLESS ALTAR OF THE SOUL; SYMBOLIZED AS A SHINING CUBE OF DIAMOND, ONE CUBIT IN DIMENSIONS, AND SET WITHIN THE HOLY OF HOLIES IN ALL GRAND ESOTERIC TEMPLES OF ANTIQUITY EDGAR LUCIEN LARKIN 1916
THE REALITY AND EVIL OF SPIRITUALISM; OR, THE IDENTITY OF SPIRIT AND MIND, AND THE DISTINCTION BETWEEN SPIRIT AND SOUL. A WORK IN WHICH SPIRITUALISM IS DISCUSSED IN THE LIGHT OF THE SCRIPTURES, THE SCIENCES AND PROFANE HISTORY MINA THOMAS 1913
NEWS FROM THE INVISIBLE WORLD; OR, INTERESTING ANECDOTES OF THE DEAD. CONTAINING A PARTICULAR SURVEY OF THE MOST REMARKABLE AND WELL AUTHENTICATED ACCOUNTS OF APPARITIONS, GHOSTS, SPECTRES, DREAMS AND VISIONS… JOHN TREGORTHA 1813
LOST MINES AND BURIED TREASURES OF CALIFORNIA: FACT, FOLKLORE AND FANTASY CONCERNING 110 SITES OF HIDDEN WEALTH; SUCCINCTLY AND ACCURATELY DESCRIBED, WITH A MAP FOR THE GUIDANCE OF TREASURE SEEKERS R. A. PIERCE 1962
SUPERSTITION’S GOLD: ROMANTIC HISTORY OF HIDDEN TREASURE IN SUPERSTITION MOUNTAIN WITH ITS FAMOUS LOST DUTCHMAN MINE OREN ARNOLD 1946
ESSAYS ON THE ANTEDILUVIAN AGE, IN WHICH ARE POINTED OUT ITS RELATIVE POSITION AND CLOSE CONNEXION WITH THE GENERAL SCHEME OF PROVIDENCE W. B. WINNING
MAZES AND LABYRINTHS: A GENERAL ACCOUNT OF THEIR HISTORY AND DEVELOPMENTS WILLIAM HENRY MATTHEWS 1922
SHORES OF DARKNESS: A STUDY OF THE INFLUENCE OF MYTHOLOGY ON THE ROMANTIC MOVEMENT IN POETRY AS SEEN IN BLAKE, KEATS, SHELLEY, AND GOETHE EDWARD B. HUNGERFORD 1941