Black Suede Hardcover with Gilt Lettering! 1954-1955. 200p. 4 Large Translucent Calculators. This course contains the second of Gann's two greatest courses and most highly sought after courses, The Mathematical Formula For Market Predictions. It includes four large, translucent Master Calculators, with complete instructions for each, Resistance Levels, Geometrical Angles, and the most complete set of Master Charts ever offered, all of the most mathematical, geometric & harmonic writings and charts together with complete instructions for their use. We have also included a collection of rare unpublished writings by Gann on astrology & the markets. Excerpts from these writings have been published as examples of Gann's astrological orientation,but never have all of these writings been published in their full form. These give excellent insights into the causative factors of the market, & of Gann's use of both heliocentric and geocentric astrology. Contents:Part I: W. D. Gann Mathematical Formula For Market Predictions: The Master Mathematical Price, Time & Trend Calculators: The Master Mathematical Price Time And Trend Calculator; This Is The Rarest And Most Highly Desired Of Gann's Courses Unavailable Since Its Original Release In Just Before Gann's Death,Containing Complete Instructions For The Following: Master Time & Price Calculator, Square Of 12 (144); Master Time & Price Calculator, Square Of9 (90); How To Use The Master Calculator May Soy Beans; Master Calculator For Weekly Time Periods To Determine The Trend Of Stocks And Commodities; Instructions For The Use Of The Time & Price Calculator - Square Of 52(104), Weekly Time Periods; May Soy Beans Square Of 67 Time Periods For Days, Weeks, Months - Instructions For Use Of The Calculator For Daily,Weekly, Monthly Time Periods, May Soy Beans; The Basis Of My Forecasting Method Geometrical Angles, Further Elaboration Of The calculators are more technical courses with angles and lines.