Hi Evan, I always include it when I submit. However, since I have been having so many problems submitting, I tried taking it away...it did not work. I will continue including it as it is found within the book and on Amazon.com Maithe ----- Original Message ----- From: Evan Reese To: bksvol-discuss@xxxxxxxxxxxxx Sent: Saturday, September 29, 2007 1:33 AM Subject: [bksvol-discuss] Re: can a book have multiple ISBN numbers? The X is part of the ISBN, something to do with the way the numbers in the rest of the ISBN are added up to create the last number makes it an X in some cases. I forget the details; but it is definitely part of the ISBN and should be put in the field on the submission form if you are filling that in. You'll get an error message if you don't because it will not be a valid ISBN without the X. Evan ----- Original Message ----- From: maithe007 To: bksvol-discuss@xxxxxxxxxxxxx Sent: Friday, September 28, 2007 9:50 PM Subject: [bksvol-discuss] Re: can a book have multiple ISBN numbers? Hi Jamie, If you get a book that was originally an Ebook, you will see it listed next to the print ISBN. I noticed it in two of the books I have. I guess it is something new. What I was talking about was letters at the end of an ISBN. What I mean is that there are nine numbers and then one letter...is this acceptable or would it be better to just not use the ISBN for submission? Maithe ----- Original Message ----- From: Jamie Yates To: bksvol-discuss@xxxxxxxxxxxxx Sent: Saturday, September 29, 2007 12:44 AM Subject: [bksvol-discuss] Re: can a book have multiple ISBN numbers? Maithe, I've seen books with an N at the end of the ISBN number. You only put in the 10 or 13 digits so if the X makes longer than that, skip it. Also, ISBN numbers are not required on submissions, but I think it makes it easier for the validator if he or she has to look anything up or get a print copy of the book. I've never purchased an e-book so I couldn't say about ISBN numbers on those. I would presume they have them but since I don't have any e-books, I can't say for sure. That wouldn't matter for Bookshare anyway, since books have to be scanned to be allowed in Bookshare under the copyright exception, is my understanding. Jamie in Michigan Currently Reading - Lisey's Story - Stephen King