Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://en.wikipedia.org/wiki/Suntop_Homes#/media/File:Suntop_Houses,_cropped,_(HABS,_PA,46-ARD,2-1).jpg
https://en.wikipedia.org/wiki/Suntop_Homes
https://en.wikipedia.org/wiki/Suntop_Homes#/media/File:SunTopHousePatentDwgFig1.png
http://patentroom.com/frank-lloyd-wright-house