Wildflowers of Michigan Field Guide: Edition 2

Wildflowers of Ohio Field Guide: Edition 2

Wildflowers of Minnesota Field Guide: Edition 2

Trees of Missouri Field Guide: Edition 2

Trees of Illinois Field Guide: Edition 2

Trees of Indiana Field Guide: Edition 2

Trees of Wisconsin Field Guide: Edition 2

Trees of Ohio Field Guide: Edition 2

Trees of New York Field Guide: Edition 2

Trees of Colorado Field Guide: Edition 2

Birds of Michigan Field Guide: Edition 3

Birds of Illinois Field Guide: Edition 2

Birds of Indiana Field Guide: Edition 2

Birds of Wisconsin Field Guide: Edition 3

Birds of Ohio Field Guide: Edition 3

Trees of Arizona Field Guide: Edition 2

Mammals of Michigan Field Guide: Edition 2

Trees of New England Field Guide

Trees of Minnesota Field Guide: Edition 2

Trees of the Carolinas Field Guide: Edition 2