This document summarizes a case study of how the Clinton-Macomb Public Library used card sorting to redesign their website. They started by gathering all elements they wanted on the site like events, policies, and hours. They then had users do an open card sort to put elements into user-defined categories. They took the results of the open sort and created a closed sort with pre-defined categories for users to validate. After testing mockups of the new site design with users and tweaking based on feedback, they launched the redesigned website with an intuitive information architecture.