It's written and photographed by people who obviously love and understand the art and construction of earthen buildings in the U.S. southwest. There are 400 photos of homes, churches, barns, and commercial buildings, mostly in New Mexico, Texas, and Arizona, and I like the photographer's eye for authenticity.
It's not meant to be a how-to book. It's historical (lots of great vintage buildings), practical (gives you ideas for design), and inspirational. I was surprised at the variety of design, and excellence of construction in this desert area.
As they say, "Mud is the unifier."