National Audubon Society Field Guide to North American Birds: Eastern Region, Revised Edition
National Audubon Society Field Guide to North American Mushrooms (National Audubon Society Field Guides)
Audubon Society Field Guide to North American Trees: Eastern Region
National Audubon Society Field Guide to Rocks and Minerals: North America (National Audubon Society Field Guides)
National Audubon Society Field Guide to Florida
National Audubon Society Field Guide to Insects and Spiders: North America (National Audubon Society Field Guides)
National Audubon Society Field Guide to North American Wildflowers--E: Eastern Region - Revised Edition (National Audubon Society Field Guides)
A Field Guide to Eastern Trees: Eastern United States and Canada, Including the Midwest (Peterson Field Guides (Paperback))
National Audubon Society Field Guide to Fishes: North America
Field Guide to the Night Sky (National Audubon Society Field Guides)