We liked these books for the most part. Having been born and raised in CA, I have learned all about these subjects, as have all of my older children. We thought that these books would be good for our younger children to read before we go back to visit, as we could visit some of the relevant sites with our younger children and expound on what they read about in these and other books. This is a nice addition to our other child friendly books on the subjects. We can use them as a springboard for further discussion and education.