This work has benefited from dialogue with the:

It also benefited enormously from expertise from the Minnesota Population Center’s Kathryn Grace, Jonathan Schroeder, and David Van Riper and data from the Spatial Core Analysis, supported by grant P2C HD041023 from the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), and from financial support from the University of Minnesota’s Grant-in-Aid of Research program and the Center for Urban and Regional Affairs.