Butterflies Through Binoculars The East by Jeffrey Glassberg

A Field Guide to the Butterflies of Eastern North America
This field guide will fit nicely into a backpack or small bag.
The plates (photos) are small but close up, allowing the butterfly watcher to quickly identify it.
The photos are in the back and separate from the butterfly's description/habit/host plants etc.
My six year old and I did not like that the photos were separate from the descriptors.
-Borrowed from the library.
It is still in print and would cost around $30.