sonic bar codes
http://www.victoriameyers.com/2010/08/architecture-and-windows-duchamp-cage-and-contemporary-architectural-production-exploring-the-window-architecture-scie.html

Marcel Duchamp

http://juju-be-art.tumblr.com/post/17611528386/marcel-duchamp-with-my-tongue-in-my-cheek-%C3%A9t%C3%A9
http://publishing.cdlib.org/ucpressebooks/view?docId=ft3w1005ft&chunk.id=d0e3309&toc.depth=100&brand=ucpress
http://blog.e-artplastic.net/images/artistes/
https://www.flickr.com/photos/dutchfonts/11528059826
http://www.toutfait.com/issues/issue_3/News/clair/popup_3.html

Alexander Cozens
http://www.tate.org.uk/art/artworks/cozens-plate-15-t03183