I have tested theories of Spatial Impact and Racial Threat using the destruction of housing projects in Chicago as a natural experiment. The working paper is linked here here.

This project required a good deal of geocoding. I geocoded the residential locations of approximately 1.5 million voters in Chicago in order to measure their spatial relationship to the destroyed housing projects. A map of all the projects in Chicago that I produced using GIS software is pictured on this page and can also be seen here.

And the area surrounding the Cabrini-Green complex, which was a crucial part of the analysis, can be seen here.