This report is jointly sponsored by HUD and HHS as part of their ongoing effort to encourage coordination of housing and services for low-income and homeless families and individuals, including those with severe mental illnesses. It is designed to help management and staff of public housing agencies and community mental health agencies seeking ways to effectively integrate younger individuals with mental illnesses into public housing for elderly families. Sections of the report include: emerging social and demographic trends; the challenges of mixed population; working together to meet the needs of public housing residents; and case studies.