When Talbott edited this work, it was already clear to him that a serious flaw of deinstitutionalization was the lack of a system of coordination among funding sources and implementation agencies. Because the problems of persons with long-term severe mental illness must be addressed by multiple public and private authorities, coordination—which was so lacking in the deinstitutionalization process—is crucial. Territorial and turf issues have often been at the root of this problem, and different agencies serving the same mentally ill individuals have often worked at cross-purposes. The ultimate objective must be a true system of care rather than a loose network of services, and an ease of communication among different types of agencies—for example, federal, state, and local agencies. To address these issues, part 4 of The Chronically Mentally Ill presents examples of state and county attempts to formulate a systems approach to the care and treatment of the chronic mentally ill patient.