@indie @neil You find more about the Technology used in the Book soft-tech:
https://archive.org/details/SoftTechAnd here is an interview with Baldwin about the pillow-dome:
https://archive.org/details/JBInterview_201804If you have a good library close to you, NIA is mentioned in the Whole Earth Ecolog and WE Epilog a lot. But Soft-Tech should give you a good start for the used tech.