4P- Support Group, Inc.: USA-based non-profit association of families of children with 4p-, offering phone support, newsletters, national biannual gathering and regional meetings.
Arran Benjamin Willock: Includes very detailed month-by-month status reports of a WHS boy born April 2000.
AWHSSG Home: Australian Wolf-Hirschhorn Syndrome Support Group, with pictures of the webmaster's daughter Bethany Louise, and reports from the biennial conference held in odd-numbered years.
Brianna: Pictures of Brianna, a 4p-WHS girl born November 2000.
eMedicine - Wolf-Hirschhorn Syndrome: Detailed information on differential diagnosis, genetics, likely clinical history, and symptoms.
Online Mendelian Inheritance in Man: Features a list of reported case studies and symptoms, genetic information, and important references.
Ryley's: A Blog About A Bloke: Parents' photos and news on their son.
WHS 4p - Support Group UK: Includes a beginners' guide to the underlying genetic cause. Managed by Mrs C. V. Hilder, mother of a WHS son.
Wolf-Hirschhorn Syndrome: German WHS Support Group, with information for parents and medical professionals. Includes a very extensive list of symptoms.