I've read this and it's a really interesting read, especially if you have any interest in mental health and the old asylums. Hearing stories from people who spent alot of time in there as patients but still spoke of the place fondly was a suprise.
Although Severalls has been done to death it's not far from where I live and reading this made the visit there more interesting, trying to work out where various bits were that were mentioned in the book.
It's massively overpriced online for what it is though in either book or PDF form! I'm pretty sure I got it off here If I rember rightly!?