i purchased it at a flyfishing show, its a patteren and technique book but he lists and shows his materials he uses, his patterens are a lil different than your regular patterens you see, different i mean by the materials he uses, i`ve never tyed any of his dries or nymphs, but ihave tyed the terrestrials anyways the book is called ....my flypatterens,materials and techniques ,by bill skilton ,published by USA-FLIES P.O. box 64 boiling springs Pa 17007