- Moylan Family Website - An Irish family's experience of Williams Syndrome.
- National Library of Medicine - A list of synonyms of Williams syndrome, a summary and major features.
- NORD : Williams Syndrome - Offers alternative names, a general discussion and resources.
- Williams Syndrome - About the author's daughter, Sereena Celeste Beech, who has this syndrome.
- Williams Syndrome - Information sheet compiled by NINDS, the National Institute of Neurological Disorders and Stroke.
- Williams Syndrome Association - A rare genetic condition (estimated to occur in 1/20,000 births) which causes medical and developmental problems.
- Williams Syndrome Association of Ireland - Provides information on the condition and on the Irish WS association. Current news, events, and fundraising.
- Williams Syndrome Foundation - Seeks to create or enhance opportunities in education, housing, employment and recreation for people who have Williams Syndrome and other related or similar conditions.
Media publications
- A Music Camp for Those Afflicted but Gifted, Too - New York Times feature article about the Belvoir Terrace summer music camp program for people with Williams syndrome. (Published 2002.08.00)