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A Field Guide to Western Butterflies
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Paul A. Opler
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Butterflies Through Binoculars
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Jeffrey Glassberg
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Butterflies Through Binoculars
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Jeffrey Glassberg
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Butterflies of New Jersey
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Michael Gochfeld, Joanna Burger
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Handbook for Butterfly Watchers
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Robert Michael Pyle, Roger Tory Peterson Institute
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A Field Guide to Eastern Butterflies
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Paul A. Opler
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The Very Hungry Caterpillar
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Eric Carle
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The Audubon Society Handbook for Butterfly Watchers
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Robert Michael Pyle
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Butterflies Through Binoculars
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Jeffrey Glassberg, Marc C. Minno, John V. Calhoun
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The Butterflies of the Eastern United States and Canada
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Samuel Hubbard Scudder
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