Books by Paul A. Opler
The Complete Book Of North American Butterflies
Status and trends of the nation's biological resources
Peterson first guide to butterflies and moths
A field guide to eastern butterflies
Butterflies of the American We
Butterflies of the American West
Butterflies east of the Great Plains
The leafmining moths of the genus Cameraria associated with Fagaceae in California (Lepidoptera, Gracillariidae)
Biology, ecology, and host specificity of microlepidoptera associated with Quercus agrifolia (Fagaceae)