Kaufman field guide to insects of North America (Kaufman field guide)

National Wildlife Federation field guide to insects and spiders & related species of North America

The National Audubon Society field guide to North American insects and spiders

The common insects of North America

Insects : a guide to familiar American insects : 225 species in full color

Familiar insects and spiders

National Audubon Society first field guide to insects

National Geographic field guide to the trees of North America

A field guide to mushrooms, North America

Field guide to mammals of North America

Field guide to the birds of North America

Field guide to the birds of North America

National Geographic field guide to the birds of North America

Birds of North America

A field guide to warblers of North America

McClane's Field guide to freshwater fishes of North America

Peterson first guide to trees

Sibley field guide to birds of eastern North America

National Geographic field guide to the birds of North America

A field guide to hawks, North America

Birds of North America : a guide to field identification

Reptiles of North America : a guide to field identification

Reptiles of North America : a guide to field identification

Wildflowers of North America : a guide to field identification

Peterson field guide to birds of North America

Butterflies and moths : a guide to the more common American species

National Geographic pocket guide to the birds of North America

The Audubon Society field guide to North American birds, eastern region

National Audubon Society Sibley Master guide to birds : field identification

National Audubon Society field guide to North American mammals

Mushrooms : a quick reference guide to mushrooms of North America

Trees of North America : a field guide to the major native and introduced species north of Mexico

The National Audubon Society birds of North America : the complete guide to birding--with full-color photographs, updated range maps, and authorative notes on voice, behavior, habitat, nesting, and conservation status

Field book of insects of the United States and Canada, aiming to answer common questions

Indian tribes of North America

A field guide to western reptiles and amphibians

Field guide to North American seashore creatures

Insects, spiders, and other terrestrial arthropods

The Audubon Society field guide to North American wildflowers, eastern region

National Audubon Society field guide to North American reptiles and amphibians

The Audubon Society field guide to North American fishes, whales, and dolphins