Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
http://m.forocoches.com/foro/showthread.php?t=1143682
http://unbuilt.tumblr.com/post/1042212792/the-mile-high-illinois-proposal-architect
http://www.wrightontheweb.net/flw7a.htm
http://blog.makedesignedobjects.com/tag/illinois/
http://www.jmhdezhdez.com/2013/06/mile-high-tower-wright-illinois.html
http://architecture.about.com/od/franklloydwright/ig/Guggenheim-Exhibition/Mile-High-Landing-Pad.htm