When I query OCLC's Search API with a blank ISBN, I always get The Social Network's soundtrack. Anyone want to take a guess at why that is so? Here is the URL. You'll need to plug in your own wskey. http://www.worldcat.org/webservices/catalog/content/isbn/?servicelevel=f ull&wskey= I'm just surprised that it doesn't throw the usual "Record does not exist" message. Brice Stacey