Obviously Grace
- A mother writes about her experience as a mother of a child who had a form of MPS and died at age eight.
- http://www.yoni.com/motherf/grace.shtml

MedlinePlus Medical Encyclopedia: Hurler syndrome
- Information about Mucopolysaccharidosis type I (MPS I), also known as Alpha-L-iduronate deficiency. Outlines the basic facts such as symptoms, treatments, and prognosis.
- http://www.nlm.nih.gov/medlineplus/ency/article/001204.htm