Alan Kay: Doing with Images Makes Symbols
https://www.youtube.com/watch?v=p2LZLYcu_JY
https://www.youtube.com/watch?v=p2LZLYcu_JY
https://css-tricks.com/the-blur-up-technique-for-loading-background-images/
https://cloudfour.com/thinks/responsive-images-201-client-hints/
http://robinosborne.co.uk/2016/05/16/lazy-loading-images-dont-rely-on-javascript/
https://www.smashingmagazine.com/2016/01/leaner-responsive-images-client-hints/
http://calendar.perfplanet.com/2015/why-arent-your-images-using-chroma-subsampling/
http://blog.cloudfour.com/responsive-images-part-10-conclusion/
http://blog.cloudfour.com/responsive-images-101-part-9-image-breakpoints/
http://blog.cloudfour.com/responsive-images-101-part-8-css-images/
http://blog.cloudfour.com/responsive-images-101-part-7-type/
http://blog.cloudfour.com/responsive-images-101-part-6-picture-element/
http://blog.cloudfour.com/responsive-images-101-part-5-sizes/
http://blog.cloudfour.com/responsive-images-101-part-4-srcset-width-descriptors/
http://blog.cloudfour.com/responsive-images-101-part-3-srcset-display-density/
http://blog.cloudfour.com/responsive-images-101-part-2-img-required/
http://blog.cloudfour.com/responsive-images-101-definitions/
http://blog.cloudfour.com/responsive-hero-images/
http://blog.cloudfour.com/responsive-images-audits/
http://blog.cloudfour.com/the-forgotten-responsive-images-spec-image-set/
http://alistapart.com/article/responsive-images-in-practice
http://alistapart.com/blog/post/why-responsive-images-matter
http://tympanus.net/codrops/2014/10/30/resizing-cropping-images-canvas/
https://www.flickr.com/photos/internetarchivebookimages/
http://www.smashingmagazine.com/2014/05/14/responsive-images-done-right-guide-picture-srcset/
http://net.tutsplus.com/tutorials/html-css-techniques/better-responsive-images-with-the-picture-element/
http://nicolasgallagher.com/flexible-css-cover-images/
http://filamentgroup.com/lab/ricg_update/
http://webification.com/a-lightweight-plugin-to-lazy-load-images-unveil-js
http://blog.cloudfour.com/responsive-images-breakpoint-generator/