I don't know the series, but did a bit of searching and found a review of the Zuni volume in the series. That review is on Amazon, and it was submitted by Codi Hooee, a library media assistant at Zuni High School. She writes that she was "very disappointed" with the book. The historical information is correct, she says, but many of the captions for photographs and drawings are incorrect. And, she wrote:
What I found most offensive was the use of a photograph of our very sacred Sha'la'ko ceremony. Overall this book was poorly written, an example from the Customs section on page 25, "Among these are the June Rain Dance, held in August,..." The editors needed to be more thorough in researching the topic.She doesn't recommend the book.
If that is the care and attention given to the entire series, it is not one I'd spend any money on... If you're considering it for your collection, pass it up.