Not quite what it says on the tin!
This is Lockett's Master's thesis, from the 1930s. I was hoping it wouldn't be racist, patronizing, and provincial; I was disappointed. I also was expecting it to be about the "unwritten literature" of the Hopi, when in reality that is largely restricted to (at most) 20% of the book, at a chapter near the end.
It gets two stars because that unwritten literature IS interesting, and I learned some things! That one chapter earns both stars! That says it all, doesn't it?