Oregon Digital is an open access archive of historical documents jointly maintained by the University of Oregon and Oregon State University Libraries. Our project focused on Western Waters, a single collection within the archive that, following a recent system migration, consisted of duplicated, inconsistent, and fragmented records. To improve accessibility and recall, we developed a three-phase plan to remove duplicate records, create accurate parent and child records, and add standardized metadata such as Library of Congress Subject Headings and Name Authority Files. The completed collection will be submitted to the Digital Public Library of America.