A rare and collectable book on a highly specialised and technical phase of fly-tying. This is a do-it-yourself book devoted to the art of weaving hair and fibre hackles for trout flies, with instructions on the construction of fly body types as patented by the author in 1939, who began his fly fishing career on the famous Big Hole River in Montana in 1925. The flies described in this book, the method of hackling, and the materials used in hackle and body formation, are all a distinct and radical departure from accepted practice. A special book for those who want to take their tying to the next level. B&w sketches throughout, ringbound, 82 pages, large A4 format.