Flies for Selective Fish

Every once and a while you run across a book on fly fishing that you must buy. A Fly Fishers Guide to the South Platte River by Pat Dorsey and published by Pruett Press in Boulder is such a book. It's a how-to manual for the entire South Platte River drainage. Of particular interest to fly tyers and fly buyers is the information on patterns. The pictures and discussion on his specialty flies for selective trout is easily worth the price of the book.
Above are three of the Mercury Bead series - clockwise from the top are the Black Beauty, Pheasant Tail Flashback, and Mercury Midge.
  Recipe for the Pheasant Tail Flashback
Hook: Dai Riki 310 or TMC 2488 sizes 18-24
Thread: 8/0 Black
Tail & Abdomen: Four-strands of pheasant tail
Thorax: Peacock herl
Wing Case: Flashabou
Bead: Mercury bead