National Geographic Field Guide to Birds: Washington and Oregon

Field Guide to Trees and Shrubs of Britain and Europe

Tom Brown's Field Guide to Nature Observation and Tracking

Field Guide to Rocks and Minerals of the World

Collins Bird Guide: The Most Complete Field Guide to the Birds of Britain and...

Field Guide to Birds of Hawaii and Tropical Pacific (Paper)

Field Guide to Butterflies and Moths of Britain and Europe

Larousse Field Guide to the Trees of Britain and Europe