Hello to all and good day. I must admit it is my wife that is the HUGE Pratchett fan, but I am getting there slowly. I was told by a salesperson at a book store near me that one can acquire copies of Diskworld books with Pratchett's signiture. I was wondering if this was indeed the case and if so is it only on new releases and how do I go about getting one? I am looking for a memorable gift for my wife's 30th birthday. Any help for this newbe would be much appreciated. Thank you.