Google Books: Quantitative Analysis of Culture Using Millions of Digitized Books
sciencemag.org
sciencemag.org
I just found that misunderestimate was not invented by Bush but the word predates him by a century http://ngrams.googlelabs.com/graph?content=misunderestimate&...
This tool is absolutely amazing.
And the change from 1900's technology to 2000's technology illustrated: http://ngrams.googlelabs.com/graph?content=electronic%2Cradi...
:D