Our Zine Hack/Doc day has come and gone and it was quite the day! Fifteen participants spent the better part of Sunday, October 6, 2019 embarking on a discovery of the Zine Union Catalog. This entailed conversations about user needs, metadata, shared authority, cataloging challenges, workflows, algorithms, and human interventions in any ZineCat workflow. Participants had a varying degree of familiarity with ZineCat and/or with Collective Access, the platform that ZineCat is run on, and came from a variety of institutions (including a co-developer of CA!). We also had one attendee join in from Milwaukee using Zoom and we thank them for tolerating the intermittent wifi disconnection and sometimes poor sound quality. Ultimately, it turned out to be more discovery than hack/doc, but we’re happy with the way it turned out! The following is a summary of the day’s events.