Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions

"With superb illustrations and concise, up-to-the-minute synopses of butterfly biology, this book is an indispensable wonder."--Robert Michael Pyle, author of "Chasing Monarchs and The Butterflies of Cascadia"
"A masterpiece on the butterflies of the San Francisco Bay and Sacramento Valley regions."--Paul A. Opler, author of "A Field Guide to Western Butterflies"
"An accessible and entertaining guide to the natural history of Bay Area and Sacramento Valley butterflies."--Carol Boggs, Stanford University