This document contains the proceedings from the National Conference on Developmental Disabilities and Gerontology, a conference designed to develop guidelines for program development on national, state, and local levels; develop and disseminate a proceedings publication; and provide an interface between professionals working at national, state, and local levels in the areas of administration and practice. Following an introduction to the problems of the aged developmentally disabled person and a discussion of the designs and use of the conference participant's workbook, project reports are presented by representatives from five Aging/Developmental Disabilities Projects. A report on needs assessment for older developmentally disabled persons is followed by presentations of four conference workshops focusing on: (1) defining terminology; (2) examining and prioritizing service needs; (3) delineating obstacles in implementing needed services; and (4) developing models of services for the aging and aged developmentally disabled person. Issues concerning the delivery of services are discussed in presentations by representatives from four national consumer organizations for persons with developmental disabilities, e.g., autism, cerebral palsy, epilepsy, mental retardation. The materials conclude with a brief conference evaluation. The appendices contain the conference agenda, a listing of conference participants, and conference evaluation forms. (NRB)