I finally bit the bullet and wrote some code to pull news stats from Google News to provide something more attractive than the charts that Google News Archive provides. I should be living up to other posts on this blog and present the data in HTML 5 charts - I'll get to that. In the mean time, here are two charts which capture mentions in the news of some key terms present in the main stream media during the US's invasion of Vietnam. Note, of course, how these terms are getting plenty of press attention now.
The y-axis is the number of documents Google reports in its archive. The x-axis is without labels (Google docs seem determined to copy some of the worst aspects of Microsoft Office's charting controls). It represents the years from 1960 to 2010.
Some more context to this thread can be found in my earlier post.