I deeply love this man's work-and I hope you will as well! He often worked in themes-similar to a concentration! Check out these great sites to learn more about him:
http://www.pem.org/sites/cornell/ (a great interactive site that shows you more of his work, and a biography on him)
http://www.aaa.si.edu/collectionsonline/cornjose/ (the Smithsonian's collection of Cornell's diaries, letters, source material, etc. If you think I have a lot of stuff-check out his!)
