http://www.infoplease.com/encyclopedia/science/tay-sachs-disease.html
http://ghr.nlm.nih.gov/condition/tay-sachs-disease
http://www.nlm.nih.gov/medlineplus/taysachsdisease.html
http://my.clevelandclinic.org/childrens-hospital/health-info/diseases-conditions/neurological-conditions/hic-tay-sachs.aspx(this link doesn't work)
http://www.ntsad.org/index.php/tay-sachs/history
http://ghr.nlm.nih.gov/condition/tay-sachs-disease
http://www.nlm.nih.gov/medlineplus/taysachsdisease.html
http://my.clevelandclinic.org/childrens-hospital/health-info/diseases-conditions/neurological-conditions/hic-tay-sachs.aspx(this link doesn't work)
http://www.ntsad.org/index.php/tay-sachs/history