The John F. Kennedy Library have just published my blog post on how data visualisation can illuminate the life of Ernest Hemingway. Using data from the Library's incredibly detailed finding aid, I have collated correspondence from over 50 years of the author's life and used my website Visual Correspondence to visualise the results. You can read the blog post here:
http://archiveblog.jfklibrary.org/2015/11/visualizing-hemingway-a-man-in-letters/