Now here is a book for the serious lister who enjoys chasing around the country for those rarities that show up every year.
As a beginner, it is great to have a book focused on Pennsylvania. The book makes me want to learn more about butterflies in our area. The fact that I managed to identify all my photos, correctly or not, is a clear success for this book. I have a lot to learn about how to watch butterflies but this book will motivate me to try.