Websites-
Journey North
North American Butterfly Association Butterfly Garden and Habitat
Books-
Monarchs and Milkweed by Anurag Agrawal ISBN: 9780691166353
Milkweed, Monarchs and More by Ba Rea, Karen Obenhauser and others ISBN: 9780965747233
Gardening for Butterflies by the XERCES SOCIETY
ISBN: 9781604694984
The Butterfly Book by Donald and Lillian Stokes ISBN: 0316817805
Life Cycle of Butterflies by Judy Burris and Wayne Richards
ISBN: 9781580176170
Butterflies how to Identify and Attract Them to Your Garden by Marcus Schneck ISBN: 0878579176
Catalogs-
Local PA Nurseries-
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Engels Farm and greenhouses, Middleburg, Pa
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Trail Garden Center, Route 901/183, Cressona, Pa