I love this line from the Chat:

The two crucial sources were the previously secret files at Broadmoor Criminal Lunatic Asylum in England, and St. Elizabeth's Hospital in Washington D.C. Plus a lot of U.S. Army records, Civil War records, and the amazing archives at Oxford University Press (which preserve such things as the tail of a mouse found among the dictionary slips -- and filed under the letter T, not M, a matter that offended some linguistic pedants).


(Italics mine)