There is a very beautiful book called NATIVE AMERICAN ARCHITECTURE. I think
the author's name starts with N... Anyone know this? Anyway, it is very
nice. Also, this is a very 60s kind of deal, but the loose interpretation
of spiritual makes me want to offer a book I've had fun checking out for a
long time: HANDMADE HOUSES by Art Boericke and Barry Shapiro. It was a
starting point for a lot of living lightly people. Similarly, the Ben
Dennis and Betsy Case book, HOUSEBOAT, gives a good feel for this kind of
modern interpretation of spiritual connection with our living spaces.