THE SILVER KEY: A GUIDE TO SPECULATORS by Sepharial. The Future Method, Science of Numbers, Finding the Winner, The Lunar Key, Gravity and Evolution, Something to Come, A Warning, On Speculation, Monte Carlo and Astrology, Tables of Sidereal Times, Tables of Ascendants, Etc! 136 pgs. 5x8. Paperback. ISBN: 0-89540-240-8. (Inquire as to price and availability)