Slides for text of western butterfly field guide, photos by Paul A. Opler unless otherwise noted, 1998, undated

This subseries contains drafts and slides for the second edition of "A Field Guide to Western Butterflies", a book in the Peterson Field Guide Series. The book was written by Opler and illustrated by Amy Bartlett Wright. Two drafts of the book are included that are not dated. As a result, draft numbers were assigned by the archivist. There is no intellectual arrangement, and the subseries maintains its original order within each box.