Peterson Field Guide to Birds of North America

Handbooks: Fossils: The Clearest Recognition Guide Available (DK Smithsonian Handbook)

Field Guide to the Night Sky (National Audubon Society Field Guides)

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

National Audubon Society Field Guide to North American Fossils

Peterson Field Guide to Birds of Eastern and Central North America, 6th Edition (Peterson Field Guides)

The Sibley Guide to Birds, 2nd Edition (Sibley Guides)

National Audubon Society Field Guide to Weather: North America (National Audubon Society Field Guides)

Peterson Field Guide to Mammals of North America (Peterson Field Guides (Paperback))

Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America, Fourth Edition (Peterson Field Guides)

Peterson Field Guide to Birds of Western North America, Fourth Edition (Peterson Field Guides)