Thank you all for the quick responses! Both books have the same ISBN on the inside as well as on the back of the book. Thanks for the other ISBNs - We will look to see which one fits best and use that for book 1. Thanks again! Marie From: deltonlib--- via Michlib-l <michlib-l@liblists.org> Sent: Thursday, December 11, 2025 11:38 AM To: michlib-l@liblists.org Subject: [Michlib-l] Cataloguing question Hi! Has anyone ever run in to an issue where two books have the same ISBN? We have never seen it before, until yesterday. Two books in a series have the same ISBN: 978-1-961302-82-2. We were trying to catalogue the second book in the series, and our system flagged the ISBN as already having a record. Any insight on what should be done for cataloguing the second book? Thanks! Marie Marie Tsuji Delton District Library 330 N. Grove St, Delton, MI 49046 269-623-8040 www.deltonlib.org