Hi, Daniel. You can include a unique ID in an @xlink:href attribute on the <cpfRelation> element. We have a little tool, the RAMP editor, that helps automate the process of adding VIAF IDs to <cpfRelation> elements: http://demo.rampeditor.info. Let me know if you have any questions! Best, Tim ________________________________ From: Encoded Archival Description List [[log in to unmask]] on behalf of Daniel Johnson [[log in to unmask]] Sent: Wednesday, October 16, 2013 11:45 AM To: [log in to unmask] Subject: Authority for CPF Relations Hello, I ran into a snag while trying to create some EAC-CPF records. I have VIAF IDs and URLs that I would like to include inside of the cpfRelation, but I don't know where to put them. It seems like I am not allowed to add a "<scources>" tag inside the cpfRelation. Is there anywhere else I can put this information? Thanks for your help, Daniel Johnson Project Archivist Brown University