Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://www.ribapix.com/index.php?a=indexes&s=item&key=IYToxOntpOjA7czoxOToiQXJjaGl0ZWN0cycgb2ZmaWNlcyI7fQ==&pg=1
http://www.design.upenn.edu/archives/majorcollections/shepheard.html