The Mapping Prejudice website is here…

About the website…

This research is showing what communities of color have known for decades. Structural barriers stopped many people who were not white from buying property and building wealth for most of the last century.

In Minneapolis, these restrictions served as powerful obstacles for people of color seeking safe and affordable housing. They also limited access to community resources like parks and schools. Racial covenants dovetailed with redlining and predatory lending practices to depress homeownership rates for African Americans. Contemporary white residents of Minneapolis like to think their city never had formal segregation. But racial covenants did the work of Jim Crow in northern cities like Minneapolis.
…
During the twentieth century, racially-restrictive deeds were a ubiquitous part of real estate transactions. Covenants were embedded in property deeds all over the country to keep people who were not white from buying or even occupying land; their popularity has been well documented in St. Louis; Seattle; Chicago; Hartford, Connecticut; Kansas City and Washington D.C.