In this paper, we present a newly constructed spatial data set of properties in the city of Philadelphia with deeds that contained a racially restrictive covenant at any time from 1920 to 1932. To date, we have reviewed hundreds of thousands of property deeds and identified nearly 4,000 instances in which a racial covenant had been included in the deed. The covenanted properties formed an invisible barrier to less densely populated areas sought after by white residents and around predominantly white neighborhoods throughout the city. We present the data in a series of geospatial maps and discuss plans for future enhancements to the data set.