Mastering the Streets of Rome: A Documentary History of the Management of Waste, Space, and People, 1200-1625 is a multi-year, collaborative project designed to enhance the study and understanding of urban infrastructure in Rome between the late Middle Ages and the beginning of the 17th century. When complete, it will offer translations of about 70 documents, treatises, and short tracts dedicated to the creation and management of infrastructure in Rome–street construction, street cleaning, neighborhood property conflicts, Tiber River flooding, and the regulation of street life. The assembled documents–each introduced and annotated–will enable a wide range of investigators to explore and understand these crucial features of urban space, mobility, and governance at first hand and in depth. It will allow readers to critically engage scholarly interpretations, to pursue new lines of investigation, and to bring the historical archive on late medieval and Renaissance Rome into dialogue with documents from other times and places for authentically comparative research.