GANN, William Delbert, & John L. Gann.

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How to Make Profits Trading in Commodities. First edition of this guide by the renegade financial trader, remembered for his dubious investment advice based on geometry, astronomy, astrology, and ancient mathematics. Co-authored with his son, who later pursued a more conventional trading career, the book argues traders can earn greater profit in commodities than in stocks.Although derided by professional traders, Gann's pronouncements were eagerly followed by amateur investors during the 1920s boom, who sought meaning and strategy amid rising prices and market fever. "Gann's works are the subject of much controversy. True believers abound and still follow many of his arcane methods of forecasting, which emphasise timing, rather than price or volume, cycles, vibrations... what is evident is that, in certain circles, his work and life are as much revered today as they were fifty or more years ago" (Dennistoun, p. 128).

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