This document is a report to the Maryland State Planning Council on Developmental Disabilities which provides an assessment of the status and problems of older developmentally disabled and retarded citizens of Maryland. The executive summary describes the project background, basic needs identified by the project, developmental disabilities system and aging network services, a review of project activities, major findings and recommendations, and lists the advisory committee members. Chapter 1 discusses a 5-year plan of action and describes eight recommendations in detail. The second chapter defines the population and gives a profile of aging developmentally disabled persons, including discussions of developmental disabilities, aging, and demographics of the target population. Special service considerations and obstacles are discussed in the third chapter. Four shared and special needs (residential programs, day programs, health care, and advocacy) are discussed. The final chapter focuses on lessons learned about agencies, developmentally disabled and mentally retarded adults, families and caregivers, the maximizing of existing services, leisure and retirement, and the need for immediate education and training. Related references, planning and service activities of select Maryland agencies, and amendments to the 1987 Reauthorization of the Older Americans Act proposed by the Consortium for Citizens with Developmental Disabilities are appended. (ABL)