The Archaeological Resource Cataloging System (ARCS), an open source, web-based digital platform that allows any archaeological project to store, annotate, organize and display digitized legacy materials such as photographs, field journals, and excavation records in a way that reflects its unique identity and organizational structure. At the present moment, many projects with histories that extend into the pre-digital era are struggling to find a way to integrate the their legacy data into more advanced digitally-based forms of archaeological analysis. Because they contain a unique combination of handwritten notes, traditional photographs and sketches / drawings on paper, these archival documents cannot be easily converted to machine-readable formats. As a result, the critical information contained within, often representing the only record of decades of exploration, runs the risk of being lost to future study and analysis. Significantly, these developments are taking place against the backdrop of limited budgets and teams of trained archivists. ARCS seeks to address many of these needs. As an open access, internet based collaborative research space, ARCS enables projects with legacy document archives to provide scholars and the public alike with open access to digitized copies of archaeological records according to their own abilities and needs. Most importantly, ARCS works to augment but not replace paper-based archaeological records, which often must be viewed in their original format in order to be truly understood.