As an amateur watcher just wanting to know which butterflies were in my garden, I was somewhat disappointed. I spent a great deal of time trying to compare the butterfly with the poorly represented plates. The few pictures scattered through the book were better, but I found errors in the identification given for the picture and the identification given in the plate and one was even not listed on the page they gave (or no where I have yet to find). The range listed were difficult for me to know if this species was in my backyard and not every species had a range map. These errors I found in one whole afternoon while trying to identify only THREE butterflies in my garden. Some of the book I like, like some of the intro information, but I guess other books have this info also. I was frustrated.