Administration of Developmental Disabilities - A partnership with state governments, local communities, and the private sector to assist people with developmental disabilities to reach maximum potential through increased independence, productivity, and community integration.

The Arc - Voluntary organization committed to the welfare of all children and adults with mental retardation and their families. Formerly ARC, Association for Retarded Citizens of the United States.

American Association of University Affiliated Programs for Persons With Developmental Disabilities - Envisions a future where all Americans, including those with disabilities and special health needs, are integral and fully participating members of their communities.

The Developmental Disabilities Chat - Offers young adults with developmental disabilities, their families and their caregivers the opportunity to learn about topics that might not be addressed in other venues.

Rehabilitation Research and Training Center on Aging with Mental Retardation (RRTCAMR) - A resource for researchers, planners, providers, self-advocates, families and students in the field of Aging and Mental Retardation. It is housed within the Department of Disability and Human Development at the University of Illinois at Chicago.

International Order of Alhambra - A fraternal order of Catholic men dedicated to assisting persons developmentally disabled by mental retardation.

Mental Health Aspects of Developmental Disabilities - The newsletter covers mental health aspects of diagnosis, treatment, and habilitation needs of persons with developmental disabilities.

President's Committee on Mental Retardation - The PCMR acts in an advisory capacity to the President and the Secretary of Health and Human Services on matters relating to programs and services for persons with mental retardation.

Consortium of Developmental Disabilities Councils - A member-driven organization that is committed to representing the diverse interests of Developmental Disabilities Councils and the people with disabilities that Councils were created to serve.

RSDI, Outaouais developmental disabilities site - Offers rehabilitation, social integration and personal support services to persons with developmental disabilities and their close ones.

Interdisciplinary Council on Developmental and Learning Disorders - Mission is to improve the identification, prevention and treatment of developmental and learning disorders.

American Association on Mental Retardation (AAMR) - Promotes global development and dissemination of progressive policies, sound research, effective practices, and universal human rights for people with intellectual disabilities.

Developmental Delay - Information from the Virtual Children's Hospital, written by a pediatric neurobiologist.