Freedom on the MoveThroughout the 250-year history of slavery in North America, enslaved people tried to escape. Once newspapers were common, enslavers posted “runaway ads” to try to locate these fugitives. Such ads provide significant quantities of individual and collective information about the economic, demographic, social, and cultural history of slavery, but they have never been systematically collected. We are designing and beginning data collection for a database that will compile all North American slave runaway ads and make them available for statistical, geographical, textual, and other forms of analysis. Some elements of data collection will be crowdsourced, engendering a public sense of co-participation in the process of recording history, and producing a living pedagogical tool for instructors at all levels, in multiple disciplines.