(Back to Art + Nature Books )  Some of my field guides, click on them for larger view.

Nat. Wildlife Fed. Field Guide to Insects and Spiders of North America
Nat Wildlife Fed North America-for most insects inc. butterflies, moths etc.
Stokes-Beg Guide to Butterflies
Stokes-Beg Guide to Butterflies- Great little guide for the beginner, goes by color and size of butterfly.
Collins-butterflies
Collins-butterflies-another great little gem, love the Collins books from the UK