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I have "inherited" a 40 page 8-1/2 x 11 booklet discussing Dynamic Gann Levels. There is no author or copyright/date info. It appears to me to be from the late 1990s to possibly very early 2000s. The author discusses W. D. Gann and Ralph Elliott (Elliott Wave Theory) for a couple of pages each, then gets into his text. Gann Levels, Fibonacci retracements... At the end of the book, the author mentions Ray Barros, Sydney Australia, and DGL group. He also mentions "Don's specific trading strategy". Is he the "Don", possibly Don Fisher? Anyone know anything about this? $ Value?