Pocket Guide to Western Hatches, Dave Hughes

90 hatches including mayflies, stoneflies, caddisflies, midges, and terrestrials. Both stillwater and creek, stream, and river hatches.  Color photos, key features, habitat, hatch times, and fishing hints for each insect.  169 fly patterns.  Washington, Idaho, Montana, Oregon, Wyoming, California, Nevada, Utah, Colorado, Arizona, New Mexico, British Columbia, and Alberta