The Seattle Archdiocese Archives holds a collection of about 300 rare books from as early as the 16th century. Prior to our project, these materials were unorganized and therefore inaccessible. Throughout our time working with the collection, we assessed its contents, entered content metadata into an organized database, and ultimately made materials accessible to researchers. Our goal was to make the contents of the rare book collection findable and accessible through detailed organizational work and the development of a maintainable database.