A Field Guide to Warblers of North America (Peterson Field Guide)Caterpillars of Eastern North America: A Guide to Identification and Natural History (Princeton Field Guides)Mushrooms of West Virginia and the Central AppalachiansThe Butterflies Of West Virginia and their Caterpillars (Pitt Series in Nature and Natural History)
Those who are observant can always find new things. Good references are the only way to become satisfied with your new discovery.
There are many books available for identification purposes. These are the four that I have found most useful.
I don't know why I couldn't put the links to these books at the bottom of the page; where I wanted them.