Butterflies Through Binoculars: the West: A Field Guide to the Butterflies of Western North America

Paperback
This field guide to butterflies of the western United States, west of the Mississippi River, completes Jeffrey Glassberg's large project to develop a set of photographic field guides to butterflies that actually work as field guides, for positive identification of butterflies from observation in the field. This guide and its companion volumes cover all the butterflies found within the continental United States.