Hi everyone, At East Carolina (Backstage customers since April 06), we are undertaking a major weeding project and deleting a vast number of bib records. We are assuming that part of our procedure will have to be an analysis of authority records linked to those deleted bibs, and determining whether the linked authorities also have to be deleted and reported to Backstage as deletes. We're imagining some kind of decision tree: Is this the last instance of this heading in the database? Is it a DLC record (as opposed to a brief system-generated record)? Is there another heading in use of which this heading is a part? You can see this can get rather complicated, and we need a way to explain this to students. Does anybody have procedures for weeding and reporting authority deletes? How do you decide which authority records are candidates for deletion? Does anyone have any automated means of pulling out auths to be deleted, or must humans evaluate each heading? We have a Horizon System, by the way, but I welcome thoughts from those with any ILS. Thanks in advance for your help, Patricia Patricia M. Dragon Cataloging Dept. Joyner Library East Carolina University Greenville NC 27858 (252) 328-0296 dragonp@ecu.edu