Open Library now has Works defined, and is looking to develop an API for their retrieval. It makes obvious sense that when a Work is retrieved via the API, that the data output would include links to the Editions that link to that Work. Here are a few possible options: 1) Retrieve Work information (author, title, subjects, possibly reviews, descriptions, first lines) alone 2) Retrieve Work information + OL identifiers for all related Editions 3) Retrieve Work information + OL identifiers + any other identifiers related to the Edition (ISBN, OCLC#, LCCN) 4) Retrieve Work information and links to Editions with full text / scans Well, you can see where I'm going with this. What would be useful? kc -- Karen Coyle [log in to unmask] http://kcoyle.net ph: 1-510-540-7596 m: 1-510-435-8234 skype: kcoylenet