In 2020, like many universities, UC Berkeley Library moved all reserves from print to electronic. However, over 50% of the requested books could not be found electronically so it was decided that we would digitize and submit to HathiTrust so these items would be available through HT ETAS. This would help ensure affordability of books to students who might otherwise be unable to buy the e- or print versions of these items and would enable access to these books, that are used mostly for teaching purposes, for other HathiTrust members. We collaborated with CDL to adjust workflow steps to result in faster submission-to-delivery turnaround, and with HathiTrust to understand their processes so we could optimize workflows to sync with theirs. The panelists will discuss the process, including digitization, development, ingest, delivery and lessons learned.