The Lost Art of Reading Nature’s Signs: Use Outdoor Clues to Find Your Way, Predict the Weather, Locate Water, Track Animals―and Other Forgotten Skills (Natural Navigation)

Botany in a Day: The Patterns Method of Plant Identification

The Sibley Guide to Trees (Sibley Guides)

Peterson Field Guide To Birds Of Eastern & Central North America, Seventh Ed. (Peterson Field Guides)

Smithsonian Handbooks: Birds of North America -- Eastern Region (Smithsonian Handbooks) (DK Handbooks)

National Audubon Society Field Guide to Rocks and Minerals: North America (National Audubon Society Field Guides)

National Geographic Pocket Guide to Rocks and Minerals of North America (Pocket Guides)

The Sibley Field Guide to Birds of Eastern North America: Second Edition (Sibley Guides)

National Geographic Field Guide to the Birds of North America, 7th Edition

BACKYARD BIRDSONG GUIDE EASTERN AND CENT (cl) (Cornell Lab of Ornithology)