From 1974 to 1980, Dr. Miller served as Project Director of the National Youth Gang Survey, the first national survey of violence by youth gangs and groups for the National Institute of Juvenile Justice and Delinquency Prevention based at Harvard Law School’s Center for Criminal Justice. He was instrumental in founding the National Youth Gang Center. Until his death, he served as an Adjunct Research Consultant for the Institute for Intergovernmental Research (IIR) in Tallahassee, FL, overseeing research for the National Youth Gang Center Project of the Office of Juvenile Justice and Delinquency Prevention, U.S. Department of Justice.