Robert J. Chaskin is professor and deputy dean at the University of Chicago School of Social Service Administration and director of the University of Chicago Urban Network. He is the author or editor of several books, including, most recently, Youth Gangs and Community Intervention. Mark L. Joseph is associate professor in the Jack, Joseph and Morton Mandel School of Applied Social Sciences at Case Western Reserve University and director of the National Initiative on Mixed-Income Communities. He is coauthor of Voices from the Field: Learning from Comprehensive Community Initiatives.