Re: Fly Fishing reference book
Aquatic Entomology by W. Patrick McCafferty ISBN 0-86720-017-0
Think of the this as the Tao of bugs. Just about anywhere you open it, is probably something you need to know. A decent bathroom book, but mine stays in the truck. Not a book to read cover to cover, but has sections written for ecologists and Fly fishers, (human speak). Best fifty bucks I've spent on fishing.
"Life's too short to fish poorly".