Summary from Amazon:
When the editors of the Oxford English Dictionary put out a call during the late 19th century pleading for "men of letters" to provide help with their mammoth undertaking, hundreds of responses came forth. Some helpers, like Dr. W.C. Minor, provided literally thousands of entries to the editors. But Minor, an American expatriate in England and a Civil War veteran, was actually a certified lunatic who turned in his dictionary entries from the Broadmoor Criminal Lunatic Asylum.