This document summarizes the work of the User Research Center at Harvard Library. It provides an overview of who they are, how they work, and what they have accomplished. The center conducts user research such as paper prototyping, usability testing, and test fests to evaluate designs and gather feedback from users. They work with campus partners to improve user experience and accessibility. Quotes from participants highlight how the research has helped improve products and services. The center is located in Lamont Library and welcomes consultations.