The New York Times has a fine article about her.

an excerpt:

Mrs. Shriver's official efforts on behalf of people with developmental challenges began after she became the executive vice president of the Joseph P. Kennedy Jr. Foundation in 1957. The foundation was established in 1946 as a memorial to her oldest brother, who was killed in World War II. Under Mrs. Shriver's direction, it focused on the prevention of mental retardation and improving the ways in which society deals with people with intellectual disabilities.

"In the 1950s, the mentally retarded were among the most scorned, isolated and neglected groups in American society," Edward Shorter wrote in his book "The Kennedy Family and the Story of Mental Retardation." "Mental retardation was viewed as a hopeless, shameful disease, and those afflicted with it were shunted from sight as soon as possible."

The foundation was instrumental in the formation of President Kennedy's Panel on Mental Retardation in 1961, development of the National Institute of Child Health and Human Development (which is now named for Mrs. Shriver) in 1962, the establishment of a network of mental retardation research centers at major medical schools across the United States in 1967 and the creation of major centers for the study of medical ethics at Harvard and Georgetown in 1971.

In 1968, the foundation helped plan and provided financing for the First International Special Olympics Summer Games, held at Soldier Field in Chicago that summer [just weeks after Robert Kennedy was shot].

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~ Becky in Long Beach